[media] media: mtk-mdp: NULL-terminate mtk_mdp_comp_dt_ids

The mtk_mdp_comp_dt_ids[] array should be NULL-terminated; add therefore an
empty entry in the end.

Fixes: c8eb2d7e8202fd9c ("[media] media: Add Mediatek MDP Driver")

Signed-off-by: Vincent Stehlé <[e-mail]>
Cc: Minghsiu Tsai <[e-mail]>
Cc: Mauro Carvalho Chehab <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/mtk-mdp/mtk_mdp_core.c

···
 	}, {
 		.compatible = "mediatek,mt8173-mdp-wrot",
 		.data = (void *)MTK_MDP_WROT
-	}
+	},
+	{ },
 };
 
 static const struct of_device_id mtk_mdp_of_ids[] = {