added 2 new ricoh models from https://github.com/libmtp/libmtp/pull/68
added 2 new ricoh models from https://github.com/libmtp/libmtp/pull/68

gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2