[esp32 m5-stack light] move freertos functions to flash instead of ir…

…am (#28455)

* Move freertos functions out if iram.

This is because linkage fails with out of IRAM.

Following https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/performance/ram-usage.html#optimizing-iram-usage

* Add newline at the end of the file

---------

Co-authored-by: Andrei Litvin <andreilitvin@google.com>

examples/lighting-app/esp32/sdkconfig_m5stack.defaults

@@ -65,3 +65,7 @@ CONFIG_RMT_SUPPRESS_DEPRECATE_WARN=y
 
 # Enable HKDF in mbedtls
 CONFIG_MBEDTLS_HKDF_C=y
+
+# Optimize IRAM
+CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
+