[media] vivid: tpg_reset_source prototype mismatch

Replaced enum v4l2_field by u32, just as the prototype in the
header has.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c
index 57ff428..0c6fa53 100644
--- a/drivers/media/platform/vivid/vivid-tpg.c
+++ b/drivers/media/platform/vivid/vivid-tpg.c
@@ -249,7 +249,7 @@
 }
 
 void tpg_reset_source(struct tpg_data *tpg, unsigned width, unsigned height,
-		       enum v4l2_field field)
+		       u32 field)
 {
 	unsigned p;