timer: add IRAM_ATTR to spinlock give/take API

Closes espressif/esp-idf#6824

components/driver/include/driver/timer.h

@@ -432,24 +432,28 @@ void timer_group_clr_intr_sta_in_isr(timer_group_t group_num, timer_intr_t intr_
 bool timer_group_get_auto_reload_in_isr(timer_group_t group_num, timer_idx_t timer_num);
 
 /** @brief Take timer spinlock to enter critical protect
+ *
+ *  @note Deprecated, the recommended way is to use ISR callbacks instead, see timer_group_example_main
  *
  * @param group_num Timer group number, 0 for TIMERG0 or 1 for TIMERG1
  *
  * @return
  *     - ESP_OK Success
  *     - ESP_ERR_INVALID_ARG Parameter error
  */
-esp_err_t timer_spinlock_take(timer_group_t group_num);
+esp_err_t timer_spinlock_take(timer_group_t group_num) __attribute__ ((deprecated));
 
 /** @brief Give timer spinlock to exit critical protect
+ *
+ *  @note Deprecated, the recommended way is to use ISR callbacks instead, see timer_group_example_main
  *
  * @param group_num Timer group number, 0 for TIMERG0 or 1 for TIMERG1
  *
  * @return
  *     - ESP_OK Success
  *     - ESP_ERR_INVALID_ARG Parameter error
  */
-esp_err_t timer_spinlock_give(timer_group_t group_num);
+esp_err_t timer_spinlock_give(timer_group_t group_num) __attribute__ ((deprecated));
 
 #ifdef __cplusplus
 }