[SL-UP] Revert the Task priorities for the 917SoC (#538)

Author: chirag-silabs

examples/platform/silabs/MatterConfig.cpp

@@ -175,20 +175,13 @@ namespace {
 
 constexpr uint32_t kMainTaskStackSize = (1024 * 5);
 // Task is dynamically allocated with max priority. This task gets deleted once the inits are completed.
-constexpr osThreadAttr_t kMainTaskAttr = {
-    .name       = "main",
-    .attr_bits  = osThreadDetached,
-    .cb_mem     = NULL,
-    .cb_size    = 0U,
-    .stack_mem  = NULL,
-    .stack_size = kMainTaskStackSize,
-#ifdef SLI_SI91X_MCU_INTERFACE
-    .priority = osPriorityRealtime4,
-#else
-    .priority = osPriorityRealtime7
-
-#endif // SLI_SI91X_MCU_INTERFACE
-};
+constexpr osThreadAttr_t kMainTaskAttr = { .name       = "main",
+                                           .attr_bits  = osThreadDetached,
+                                           .cb_mem     = NULL,
+                                           .cb_size    = 0U,
+                                           .stack_mem  = NULL,
+                                           .stack_size = kMainTaskStackSize,
+                                           .priority   = osPriorityRealtime7 };
 osThreadId_t sMainTaskHandle;
 static chip::DeviceLayer::DeviceInfoProviderImpl gExampleDeviceInfoProvider;
 

third_party/silabs/SiWx917_sdk.gni

@@ -265,10 +265,6 @@ template("siwx917_sdk") {
       "SLI_SI91X_LWIP_HOSTED_NETWORK_STACK=1",
       "__FREERTOS_OS_WISECONNECT=1",
       "SL_SI91X_SOC_MODE=1",
-
-      # TODO: This is a workaround for the init issue with the SiWx917
-      "SL_WLAN_EVENT_THREAD_PRIORITY=osPriorityRealtime6",
-      "SL_WLAN_COMMAND_ENGINE_THREAD_PRIORITY=osPriorityRealtime5",
     ]
 
     if (silabs_log_enabled && chip_logging) {