Buckify runtime (#12244)

Summary:

Add BUCK target for runtime

Differential Revision: D72726608

Author: JakeStevens

backends/nxp/runtime/TARGETS

@@ -0,0 +1,5 @@
+load("targets.bzl", "define_common_targets")
+
+oncall("wrist_motion_systems")
+
+define_common_targets()

backends/nxp/runtime/targets.bzl

@@ -0,0 +1,21 @@
+load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
+load("//arvr/firmware/projects/smartglasses/config:config.bzl", "sg_config")
+
+def define_common_targets():
+    runtime.cxx_library(
+        name = "nxp_backend",
+        srcs = ["NeutronBackend.cpp"],
+        headers = ["NeutronDriver.h", "NeutronErrors.h"],
+        compatible_with = ["ovr_config//cpu:arm32-embedded", sg_config("embedded-mcu-rtos")],
+        # Neutron runtime needs to compile with executor as whole
+        # @lint-ignore BUCKLINT: Avoid `link_whole=True` (https://fburl.com/avoid-link-whole)
+        link_whole = True,
+        # Constructor needed for backend registration.
+        compiler_flags = ["-Wno-global-constructors", "-fno-rtti", "-DNO_HEAP_USAGE"],
+        visibility = ["@EXECUTORCH_CLIENTS"],
+        deps = [
+            "//executorch/runtime/backend:interface",
+            "//executorch/runtime/core:core",
+            "//arvr/third-party/toolchains/nxp-sdk/2.16.0/middleware/eiq/executorch/third-party/neutron/rt700:libNeutron",
+        ],
+    )