drm: Add a missing ')'

The code happened to compile because the flag wasn't actually used yet.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index 95d7aad..966fe7d 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -268,7 +268,7 @@
 	__u32 handle;
 };
 
-#define DRM_MODE_FB_INTERLACED	(1<<0 /* for interlaced framebuffers */
+#define DRM_MODE_FB_INTERLACED	(1<<0) /* for interlaced framebuffers */
 
 struct drm_mode_fb_cmd2 {
 	__u32 fb_id;