[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/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c
index 2a2d21e..38b3f15 100644
--- a/drivers/media/radio/radio-si4713.c
+++ b/drivers/media/radio/radio-si4713.c
@@ -222,7 +222,7 @@
 }
 
 static long radio_si4713_default(struct file *file, void *p,
-				 bool valid_prio, int cmd, void *arg)
+				 bool valid_prio, unsigned int cmd, void *arg)
 {
 	return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core,
 					  ioctl, cmd, arg);