feat(test_app): add test app for multiple phy init data

components/esp_phy/include/esp_private/phy.h

@@ -313,6 +313,17 @@ esp_err_t esp_phy_fe_sleep_data_init(void);
  */
 void esp_phy_fe_sleep_data_deinit(void);
 #endif // SOC_PM_MODEM_RETENTION_BY_REGDMA && (CONFIG_MAC_BB_PD || CONFIG_ESP_PHY_HW_SWITCH_RF)
+
+#if CONFIG_ESP_PHY_MULTIPLE_INIT_DATA_BIN
+/**
+ * @brief Get the PHY init data type that is currently applied to the PHY
+ *
+ * @return the applied init data type, ESP_PHY_INIT_DATA_TYPE_DEFAULT as long as no
+ *         certified init data has been selected by a country code
+ */
+phy_init_data_type_t esp_phy_get_init_data_type(void);
+#endif
+
 #ifdef __cplusplus
 }
 #endif