docs:Add esp_mac.h header file to Miscellaneous System APIs in API Reference

docs/doxygen/Doxyfile

@@ -182,6 +182,7 @@ INPUT = \
     $(PROJECT_PATH)/components/esp_system/include/esp_int_wdt.h \
     $(PROJECT_PATH)/components/esp_system/include/esp_task_wdt.h \
     $(PROJECT_PATH)/components/esp_hw_support/include/esp_crc.h \
+    $(PROJECT_PATH)/components/esp_hw_support/include/esp_mac.h \
     $(PROJECT_PATH)/components/esp_system/include/esp_freertos_hooks.h \
     $(PROJECT_PATH)/components/esp_system/include/esp_ipc.h \
     $(PROJECT_PATH)/components/esp_system/include/esp_expression_with_stack.h \

docs/en/api-reference/system/system.rst

@@ -203,4 +203,4 @@ API Reference
 
 .. include-build-file:: inc/esp_system.inc
 .. include-build-file:: inc/esp_idf_version.inc
-
+.. include-build-file:: inc/esp_mac.inc