src/mainboard/kahlee: Use common mainboard and romstage files

Until these need to be separated out, use a common file for mainboard
and romstage to make upkeep easier.

BUG=b:80106042
TEST=Build Grunt and Careena

Change-Id: I65188bee1958d442bfe64637c3b93dc05583a686
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/26968
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/mainboard/google/kahlee/variants/careena/Makefile.inc

@@ -15,6 +15,6 @@
 
 subdirs-y += ../baseboard/spd
 
-romstage-y += romstage.c
+romstage-y += ../baseboard/romstage.c
 
-ramstage-y += mainboard.c
+ramstage-y += ../baseboard/mainboard.c

src/mainboard/google/kahlee/variants/grunt/Makefile.inc

@@ -15,6 +15,6 @@
 
 subdirs-y += ../baseboard/spd
 
-romstage-y += romstage.c
+romstage-y += ../baseboard/romstage.c
 
-ramstage-y += mainboard.c
+ramstage-y += ../baseboard/mainboard.c

src/mainboard/google/kahlee/variants/grunt/mainboard.c

@@ -1,27 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright 2018 Google LLC
- *
- * 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 <ec/google/chromeec/ec.h>
-#include <baseboard/variants.h>
-
-uint8_t variant_board_sku(void)
-{
-	static int sku = -1;
-
-	if (sku == -1)
-		sku = google_chromeec_get_sku_id();
-
-	return sku;
-}

src/mainboard/google/kahlee/variants/grunt/romstage.c

@@ -1,26 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2018 Google, LLC.
- *
- * 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 <baseboard/variants.h>
-#include <ec/google/chromeec/ec.h>
-
-void variant_romstage_entry(int s3_resume)
-{
-	uint32_t sku = google_chromeec_get_sku_id();
-
-	/* Based on SKU, turn on keyboard backlight to show system is booting */
-	if (sku <= 6 && !s3_resume)
-		google_chromeec_kbbacklight(75);
-}