media: annotate ->poll() instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/media/platform/m2m-deinterlace.c b/drivers/media/platform/m2m-deinterlace.c
index c8a1249..945ef1e 100644
--- a/drivers/media/platform/m2m-deinterlace.c
+++ b/drivers/media/platform/m2m-deinterlace.c
@@ -950,11 +950,11 @@
 	return 0;
 }
 
-static unsigned int deinterlace_poll(struct file *file,
+static __poll_t deinterlace_poll(struct file *file,
 				 struct poll_table_struct *wait)
 {
 	struct deinterlace_ctx *ctx = file->private_data;
-	int ret;
+	__poll_t ret;
 
 	deinterlace_lock(ctx);
 	ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);