ChromeOS boards: Use explicit include of chromeos.c

Change-Id: I7b3d044fad1d6973910e9bef347478a45c149a4f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5640
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Aaron Durbin <adurbin@google.com>
diff --git a/src/mainboard/samsung/stumpy/Makefile.inc b/src/mainboard/samsung/stumpy/Makefile.inc
new file mode 100644
index 0000000..c595a62
--- /dev/null
+++ b/src/mainboard/samsung/stumpy/Makefile.inc
@@ -0,0 +1,21 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2012 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.
+##
+## 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
+##
+
+romstage-$(CONFIG_CHROMEOS) += chromeos.c
+ramstage-$(CONFIG_CHROMEOS) += chromeos.c