drm/nouveau: use ALIGN instead of open coding it

CC: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_fbcon.c b/drivers/gpu/drm/nouveau/nv50_fbcon.c
index 0f57cdf..993c712 100644
--- a/drivers/gpu/drm/nouveau/nv50_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nv50_fbcon.c
@@ -109,7 +109,7 @@
 		return;
 	}
 
-	width = (image->width + 31) & ~31;
+	width = ALIGN(image->width, 32);
 	dwords = (width * image->height) >> 5;
 
 	BEGIN_RING(chan, NvSub2D, 0x0814, 2);