radv: Pass CMASK alignment to application.

CMASK alignment can be greater than image data alignment, so pass
it to the app so that it knows what alignment to backing memory
should have.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>

src/amd/vulkan/radv_image.c

@@ -571,6 +571,7 @@ radv_image_alloc_cmask(struct radv_device *device,
 	/* + 8 for storing the clear values */
 	image->clear_value_offset = image->cmask.offset + image->cmask.size;
 	image->size = image->cmask.offset + image->cmask.size + 8;
+	image->alignment = MAX2(image->alignment, image->cmask.alignment);
 }
 
 static void