media: av7110: Fix warning 'unsigned' -> 'unsigned int'

Fix the following checkpatch warning:

av7110_ca.c:29: WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: Osama Albahrani <osalbahr@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

drivers/staging/media/av7110/av7110_ca.c

@@ -26,7 +26,7 @@
 
 void CI_handle(struct av7110 *av7110, u8 *data, u16 len)
 {
-	unsigned slot_num;
+	unsigned int slot_num;
 
 	dprintk(8, "av7110:%p\n", av7110);