efi/arm: Start using fw_devlink_get_flags()

The fw_devlink_get_flags() provides the right flags to use when creating
mandatory device links derived from information provided by the
firmware. So, use that.
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200222014038.180923-4-saravanak@google.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/firmware/efi/arm-init.c

@@ -349,7 +349,7 @@ static int efifb_add_links(const struct fwnode_handle *fwnode,
 	 * If this fails, retrying this function at a later point won't
 	 * change anything. So, don't return an error after this.
 	 */
-	if (!device_link_add(dev, sup_dev, 0))
+	if (!device_link_add(dev, sup_dev, fw_devlink_get_flags()))
 		dev_warn(dev, "device_link_add() failed\n");
 
 	put_device(sup_dev);