Merge branch 'fix/fix_c6_rtc_periph_depends_on_top_v5.5' into 'release/v5.5'

fix(esp_hw_support): add dependency of the TOP domain to the RTC_PERIPH domain for esp32c6 (v5.5)

See merge request espressif/esp-idf!43383

components/esp_hw_support/sleep_modes.c

@@ -2748,6 +2748,13 @@ static SLEEP_FN_ATTR uint32_t get_power_down_flags(void)
         }
     }
 #endif
+
+#if CONFIG_IDF_TARGET_ESP32C6
+    if (!(pd_flags & PMU_SLEEP_PD_TOP)) {
+        // TOP power domain depends on the RTC_PERIPH power domain on ESP32C6, RTC_PERIPH should only be disabled when the TOP domain is down.
+        pd_flags &= ~RTC_SLEEP_PD_RTC_PERIPH;
+    }
+#endif
     return pd_flags;
 }