ULP: add functions for stopping/restarting the ulp-riscv

Closes https://github.com/espressif/esp-idf/issues/8232

components/ulp/include/esp32s3/ulp_riscv.h

@@ -38,6 +38,32 @@ esp_err_t ulp_riscv_run(void);
  */
 esp_err_t ulp_riscv_load_binary(const uint8_t* program_binary, size_t program_size_bytes);
 
+/**
+ * @brief Stop the ULP timer
+ *
+ * @note This will stop the ULP from waking up if halted, but will not abort any program
+ *       currently executing on the ULP.
+ */
+void ulp_riscv_timer_stop(void);
+
+
+/**
+ * @brief Resumes the ULP timer
+ *
+ * @note This will resume an already configured timer, but does no other configuration
+ *
+ */
+void ulp_riscv_timer_resume(void);
+
+
+/**
+ * @brief Halts the program currently running on the ULP-RISC-V
+ *
+ * @note  Program will restart at the next ULP timer trigger if timer is still running.
+ *        If you want to stop the ULP from waking up then call ulp_riscv_timer_stop() first.
+ */
+void ulp_riscv_halt(void);
+
 #ifdef __cplusplus
 }
 #endif