Add gdsp_remoteproc test script and README for Lemans platform

This commit introduces a test script to validate gpdsp0 and gpdsp1 remoteproc functionality on the Lemans platform. It includes start/stop/restart checks and logs results in a standardized format. A detailed README is also added to document usage, expected output, and prerequisites.

Signed-off-by: Sai-teja573 <122cs0573@nitrkl.ac.in>

Author: Sai-teja573

Runner/suites/Kernel/FunctionalArea/baseport/gdsp_remoteproc/README.md

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+# gdsp_remoteproc Test
+
+© Qualcomm Technologies, Inc. and/or its subsidiaries.  
+SPDX-License-Identifier: BSD-3-Clause-Clear
+
+## Overview
+
+This test case validates the functionality of the **GPDSP (General Purpose DSP)** firmware loading and control on the **Lemans** platform. It specifically targets:
+
+- `gpdsp0`
+- `gpdsp1`
+
+The script ensures that each GPDSP remote processor:
+- Is currently running
+- Can be stopped successfully
+- Can be restarted and returns to the running state
+
+This is essential for verifying the stability and control of DSP subsystems on Qualcomm-based platforms.
+
+## Usage
+
+### Instructions
+
+1. **Transfer the Script**: Use `scp` or any file transfer method to copy the script to the Lemans target device.
+2. **Navigate to the Script Directory**: SSH into the device and go to the directory where the script is located.
+3. **Run the Script**:
+   ```sh
+   ./run.sh
+   ```
+   ---
+   #### Quick Example
+```
+git clone <this-repo>
+cd <this-repo>
+scp -r common Runner user@target_device_ip:<Path in device>
+ssh user@target_device_ip
+cd <Path in device>/Runner && ./run-test.sh gdsp_remoteproc
+```
+---
+## Prerequisites
+1. The device must expose `/sys/class/remoteproc/remoteproc*/firmware and /state` interfaces.
+2. Root access may be required to write to remoteproc state files.
+3. The firmware names must include gpdsp0 and gpdsp1.
+ ---
+ ## Result Format
+Test result will be saved in `gdsp_remoteproc.res` as:  
+## Output
+A .res file is generated in the same directory:
+
+`gdsp_remoteproc PASS`  OR   `gdsp_remoteproc FAIL`
+
+## Sample Log
+```
+Output
+
+[INFO] 1970-01-01 03:56:11 - ------------------------------------------------------------------------------
+[INFO] 1970-01-01 03:56:11 - -------------------Starting gdsp_remoteproc Testcase----------------------------
+[INFO] 1970-01-01 03:56:11 - === Test Initialization ===
+[INFO] 1970-01-01 03:56:11 - Found gpdsp0 at /sys/class/remoteproc/remoteproc3
+[PASS] 1970-01-01 03:56:11 - gpdsp0 stop successful
+[INFO] 1970-01-01 03:56:11 - Restarting gpdsp0
+[PASS] 1970-01-01 03:56:12 - gpdsp0 PASS
+[INFO] 1970-01-01 03:56:12 - Found gpdsp1 at /sys/class/remoteproc/remoteproc4
+[PASS] 1970-01-01 03:56:12 - gpdsp1 stop successful
+[INFO] 1970-01-01 03:56:12 - Restarting gpdsp1
+[PASS] 1970-01-01 03:56:12 - gpdsp1 PASS
+[INFO] 1970-01-01 03:56:12 - -------------------Completed gdsp_remoteproc Testcase----------------------------
+```

Runner/suites/Kernel/FunctionalArea/baseport/gdsp_remoteproc/run.sh

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+#!/bin/sh
+
+# Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+# SPDX-License-Identifier: BSD-3-Clause-Clear
+
+# Robustly find and source init_env
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+INIT_ENV=""
+SEARCH="$SCRIPT_DIR"
+while [ "$SEARCH" != "/" ]; do
+    if [ -f "$SEARCH/init_env" ]; then
+        INIT_ENV="$SEARCH/init_env"
+        break
+    fi
+    SEARCH=$(dirname "$SEARCH")
+done
+
+if [ -z "$INIT_ENV" ]; then
+    echo "[ERROR] Could not find init_env (starting at $SCRIPT_DIR)" >&2
+    exit 1
+fi
+
+# Only source if not already loaded (idempotent)
+if [ -z "$__INIT_ENV_LOADED" ]; then
+    # shellcheck disable=SC1090
+    . "$INIT_ENV"
+fi
+
+# Always source functestlib.sh, using $TOOLS exported by init_env
+# shellcheck disable=SC1090,SC1091
+. "$TOOLS/functestlib.sh"
+
+TESTNAME="gdsp_remoteproc"
+test_path=$(find_test_case_by_name "$TESTNAME")
+cd "$test_path" || exit 1
+res_file="./$TESTNAME.res"
+
+log_info "-----------------------------------------------------------------------------------------"
+log_info "-------------------Starting $TESTNAME Testcase----------------------------"
+log_info "=== Test Initialization ==="
+
+# Loop through all remoteproc firmware entries to find gpdsp0 and gpdsp1
+for gdsp_firmware in gpdsp0 gpdsp1; do
+    for fw_path in /sys/class/remoteproc/remoteproc*/firmware; do
+        if grep -q "$gdsp_firmware" "$fw_path"; then
+            remoteproc_path=$(dirname "$fw_path")
+            log_info "Found $gdsp_firmware at $remoteproc_path"
+
+            state1=$(cat "$remoteproc_path/state")
+            if [ "$state1" != "running" ]; then
+                log_fail "$gdsp_firmware not running initially"
+                echo "$TESTNAME FAIL" > "$res_file"
+                exit 1
+            fi
+
+            echo stop > "$remoteproc_path/state"
+            state2=$(cat "$remoteproc_path/state")
+            if [ "$state2" != "offline" ]; then
+                log_fail "$gdsp_firmware stop failed"
+                echo "$TESTNAME FAIL" > "$res_file"
+                exit 1
+            else
+                log_pass "$gdsp_firmware stop successful"
+            fi
+
+            log_info "Restarting $gdsp_firmware"
+            echo start > "$remoteproc_path/state"
+            state3=$(cat "$remoteproc_path/state")
+            if [ "$state3" != "running" ]; then
+                log_fail "$gdsp_firmware start failed"
+                echo "$TESTNAME FAIL" > "$res_file"
+                exit 1
+            fi
+
+            log_pass "$gdsp_firmware PASS"
+        fi
+    done
+done
+
+echo "$TESTNAME PASS" > "$res_file"
+log_info "-------------------Completed $TESTNAME Testcase----------------------------"
+exit 0