Merge branch 'bugfix/fix_esp32c3_brownout_under_deepsleep' into 'master'

rtc: fix c3 brownout bug after deepsleep

Closes IDF-4875

See merge request espressif/esp-idf!16654

components/esp_hw_support/port/esp32c3/rtc_init.c

@@ -154,6 +154,7 @@ void rtc_init(rtc_config_t cfg)
 
     REG_WRITE(RTC_CNTL_INT_ENA_REG, 0);
     REG_WRITE(RTC_CNTL_INT_CLR_REG, UINT32_MAX);
+    REGI2C_WRITE_MASK(I2C_ULP, I2C_ULP_IR_FORCE_XPD_CK, 1);
 }
 
 rtc_vddsdio_config_t rtc_vddsdio_get_config(void)