ledc: move callback to IRAM, it's called from an ISR
* Use callback only if you are aware it is being called inside an ISR
* Otherwise, you can use a semaphore to unblock tasks
*/
-static bool cb_ledc_fade_end_event(const ledc_cb_param_t *param, void *user_arg)
+static IRAM_ATTR bool cb_ledc_fade_end_event(const ledc_cb_param_t *param, void *user_arg)
{
portBASE_TYPE taskAwoken = pdFALSE;
