drm/nouveau/platform: recognize GM20B

Allow the platform driver to recognize GM20B.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_platform.c

@@ -252,6 +252,7 @@ static int nouveau_platform_remove(struct platform_device *pdev)
 #if IS_ENABLED(CONFIG_OF)
 static const struct of_device_id nouveau_platform_match[] = {
 	{ .compatible = "nvidia,gk20a" },
+	{ .compatible = "nvidia,gm20b" },
 	{ }
 };