staging/omapdrm: remove the unnecessary initialization of a local variable in omap_crtc.c

The following error fixed.
- ERROR: do not initialise statics to 0 or NULL
Signed-off-by: YAMANE Toshiaki <yamanetoshi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/omapdrm/omap_crtc.c

@@ -114,7 +114,7 @@ static void omap_crtc_load_lut(struct drm_crtc *crtc)
 
 static void vblank_cb(void *arg)
 {
-	static uint32_t sequence = 0;
+	static uint32_t sequence;
 	struct drm_crtc *crtc = arg;
 	struct drm_device *dev = crtc->dev;
 	struct omap_crtc *omap_crtc = to_omap_crtc(crtc);