freertos: Fix GCC 11 SMP FreeRTOS build errors

This commit fixes the following build errors in SMP FreeRTOS when building with GCC 11:

- "-Wattributes" warning due to conflicting attributes on xPortInterruptedFromISRContext()
- "-Wtype-limits" warning due to taskVALID_CORE_ID() not casting xCoreID

components/freertos/FreeRTOS-Kernel-SMP/include/freertos/task.h

@@ -271,7 +271,7 @@ typedef enum
 #define taskSCHEDULER_RUNNING        ( ( BaseType_t ) 2 )
 
 /* Check if core value is valid */
-#define taskVALID_CORE_ID( xCoreID ) ( ( BaseType_t ) ( ( 0 <= xCoreID ) && ( xCoreID < configNUM_CORES ) ) )
+#define taskVALID_CORE_ID( xCoreID ) ( ( BaseType_t ) ( ( 0 <= (BaseType_t) xCoreID ) && ( (BaseType_t) xCoreID < configNUM_CORES ) ) )
 
 /*-----------------------------------------------------------
 * TASK CREATION API

components/freertos/FreeRTOS-Kernel-SMP/portable/xtensa/include/freertos/portmacro.h

@@ -267,7 +267,7 @@ static inline BaseType_t xPortInIsrContext(void)
     return xPortCheckIfInISR();
 }
 
-BaseType_t IRAM_ATTR xPortInterruptedFromISRContext(void);
+BaseType_t xPortInterruptedFromISRContext(void);
 
 static inline UBaseType_t xPortSetInterruptMaskFromISR(void)
 {