[media] v4l: Convert drivers to use monotonic timestamps

Convert drivers using wall clock time (CLOCK_REALTIME) to timestamp from the
monotonic timer (CLOCK_MONOTONIC).

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/platform/omap24xxcam.c b/drivers/media/platform/omap24xxcam.c
index 70f45c3..eda3274 100644
--- a/drivers/media/platform/omap24xxcam.c
+++ b/drivers/media/platform/omap24xxcam.c
@@ -402,7 +402,7 @@
 		omap24xxcam_core_disable(cam);
 	spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags);
 
-	do_gettimeofday(&vb->ts);
+	v4l2_get_timestamp(&vb->ts);
 	vb->field_count = atomic_add_return(2, &fh->field_count);
 	if (csr & csr_error) {
 		vb->state = VIDEOBUF_ERROR;