drivers: wifi: siwx91x: Websockets NetStack Application

To support the SiWx917 Websockets Network Stack Application
protocol offloading, we need to integrate the Silicon Labs
APIs, so adding the corresponding source files and include
files in the kconfig and CMakelist

Signed-off-by: Rahul Gurram <rahul.gurram@silabs.com>

Author: ragurram26

drivers/wifi/siwx91x/Kconfig.siwx91x

@@ -107,6 +107,15 @@ config WIFI_SILABS_SIWX91X_PING
 	  than the Zephyr one. See also sl_net_ping.h in Silabs HAL for more
 	  information about the API.
 
+config WIFI_SILABS_SIWX91X_WEBSOCKET_CLIENT
+	bool "Offloaded implementation of Websocket client"
+	help
+	  Enable this option to allow to use the Websocket client implementation
+	  provided by the Network Co-Processor present on SiWx91x series. This
+	  implementation usually require less resources than the Zephyr one.
+	  See also sl_websocket_client.h in Silabs HAL for more information
+	  about the API.
+
 config WIFI_SILABS_SIWX91X_ENABLE_ROAMING
 	bool "WiFi roaming support"
 	default y

modules/hal_silabs/wiseconnect/CMakeLists.txt

@@ -149,6 +149,12 @@ if(CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_OFFLOAD)
   zephyr_library_sources_ifdef(CONFIG_WIFI_SILABS_SIWX91X_PING
     ${WISECONNECT_DIR}/components/device/silabs/si91x/wireless/icmp/sl_net_ping.c
   )
+  zephyr_include_directories_ifdef(CONFIG_WIFI_SILABS_SIWX91X_WEBSOCKET_CLIENT
+    ${WISECONNECT_DIR}/components/service/sl_websocket_client/inc
+  )
+  zephyr_library_sources_ifdef(CONFIG_WIFI_SILABS_SIWX91X_WEBSOCKET_CLIENT
+    ${WISECONNECT_DIR}/components/service/sl_websocket_client/src/sl_websocket_client.c
+  )
 endif() # CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_OFFLOAD
 if(CONFIG_BT_SILABS_SIWX91X)
   zephyr_compile_definitions(