[media] ioctl numbers are unsigned int

ioctl's number is unsigned int. Fix it at vidioc_default.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 75a7dfc..b273f0e 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -275,7 +275,7 @@
 
 	/* For other private ioctls */
 	long (*vidioc_default)	       (struct file *file, void *fh,
-					bool valid_prio, int cmd, void *arg);
+					bool valid_prio, unsigned int cmd, void *arg);
 };