Merge branch 'bugfix/close_rf_in_deep_sleep_backport_v5.0' into 'release/v5.0'

deep sleep: further optimize sleep current if RF is enabled (backport v5.0)

See merge request espressif/esp-idf!22738

components/esp_phy/src/phy_init.c

@@ -224,6 +224,11 @@ static inline void phy_digital_regs_load(void)
     }
 }
 
+bool esp_phy_is_initialized(void)
+{
+    return s_is_phy_calibrated;
+}
+
 void esp_phy_enable(void)
 {
     _lock_acquire(&s_phy_access_lock);