efi: Make use of bootm_final()

Call this function from the EFI code. Add the required call to
dm_remove_devices_active() there.

Signed-off-by: Simon Glass <sjg@chromium.org>

boot/bootm_final.c

@@ -6,7 +6,9 @@
  */
 
 #include <bootm.h>
+#include <dm/root.h>
 
 void bootm_final(enum bootm_final_t flags)
 {
+	dm_remove_devices_active();
 }

lib/efi_loader/efi_boottime.c

@@ -2256,7 +2256,7 @@ static efi_status_t EFIAPI efi_exit_boot_services(efi_handle_t image_handle,
 		if (IS_ENABLED(CONFIG_USB_DEVICE))
 			udc_disconnect();
 		board_quiesce_devices();
-		dm_remove_devices_active();
+		bootm_final(0);
 	}
 
 	/* Patch out unsupported runtime function */