mcpwm: reset peripheral in restart, panic and halt

mcpwm is commonly used in power eletronic area, when restart happens,
make sure the mcpwm generator is not working.

closes https://github.com/espressif/esp-idf/issues/11324

components/esp_system/include/esp_private/system_internal.h

@@ -63,6 +63,11 @@ int64_t esp_system_get_time(void);
  */
 uint32_t esp_system_get_time_resolution(void);
 
+/**
+ * @brief Before the system exit (e.g. panic, brownout, restart, etc.), this function is to be called to reset all necessary peripherals.
+ */
+void esp_system_reset_modules_on_exit(void);
+
 #ifdef __cplusplus
 }
 #endif