efi_loader: remove non vital devices first

DM_FLAG_VITAL marks devices which are essential for the operation of
other devices. This can be used to order device removal and remove for
example the PCI xhci device before its iommu on Apple silicon systems.

Signed-off-by: Janne Grunau <[email protected]>

lib/efi_loader/efi_boottime.c

@@ -2234,6 +2234,7 @@ 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_flags(DM_REMOVE_ACTIVE_ALL | DM_REMOVE_NON_VITAL);
 		dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
 	}