libpayload: If no video drivers initialize in video_init, return 1.

Change-Id: I56f810dfa6654ac1e9d1696ad15e7f1b8bfe59bd
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/2652
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

payloads/libpayload/drivers/video/video.c

@@ -216,6 +216,7 @@ int video_init(void)
 		video_console_fixup_cursor();
 		return 0;
 	}
+	return 1;
 }
 
 int video_console_init(void)