MAINTAINERS: Add myself as UVC Gadget Maintainer

Add myself as a second maintainer for the UVC Gadget.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230124153909.867202-1-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: djrscally

MAINTAINERS

@@ -21723,6 +21723,7 @@ F:	include/uapi/linux/uvcvideo.h
 
 USB WEBCAM GADGET
 M:	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+M:	Daniel Scally <dan.scally@ideasonboard.com>
 L:	linux-usb@vger.kernel.org
 S:	Maintained
 F:	drivers/usb/gadget/function/*uvc*