soc/intel/common/ebda: Drop code

There is no need to use EBDA to pass cbmem_top from romstage to
later stages.

Change-Id: I46e2459ff3c785f530cabc5930004ef920ffc89a
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36362
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/soc/intel/skylake/include/soc/ebda.h

@@ -1,26 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2017 Intel Corporation.
- *
- * 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.
- */
-
-#ifndef SOC_EBDA_H
-#define SOC_EBDA_H
-
-#include <stdint.h>
-
-struct ebda_config {
-	uint32_t signature; /* EBDA signature */
-	uint32_t cbmem_top; /* coreboot memory start */
-};
-
-#endif