Drop mainboard chip.h

mainboard_config never worked right, at least not since we've had sconfig.
Hence, drop mainboard/<vendor>/<device>/chip.h and fix up the mainboards that
tried to use it anyways.

Change-Id: I7cd403ea188d8a9fd4c1ad15479fa88e02ab8e83
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1359
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/mainboard/iwave/iWRainbowG6/chip.h

@@ -1,21 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007-2008 coresystems GmbH
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-extern struct chip_operations mainboard_ops;
-struct mainboard_config {};

src/mainboard/iwave/iWRainbowG6/mainboard.c

@@ -21,7 +21,6 @@
 #include <device/device.h>
 #include <console/console.h>
 #include <boot/tables.h>
-#include "chip.h"
 #include "hda_verb.h"
 
 static void verb_setup(void)