google/reef: Add coral

A new variant copied from reef.
Allow override of the SKU.

Change-Id: Ibe160e75aa23623812f0fb9121d1d8226afc00d8
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/20020
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/reef/variants/coral/mainboard.c b/src/mainboard/google/reef/variants/coral/mainboard.c
new file mode 100644
index 0000000..41a8056
--- /dev/null
+++ b/src/mainboard/google/reef/variants/coral/mainboard.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2016, 2017 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <stdint.h>
+#include "baseboard/variants.h"
+
+uint8_t variant_board_sku(void)
+{
+	return 0;
+}
+
+void variant_nhlt_oem_overrides(const char **oem_id,
+				const char **oem_table_id,
+				uint32_t *oem_revision)
+{
+	*oem_id = "coral";
+	*oem_table_id = CONFIG_VARIANT_DIR;
+	*oem_revision = variant_board_sku();
+}
+