ChromeOS boards: Always build code for bootmode straps

Leave it under BOOTMODE_STRAPS to control whether these have
any functional meaning on the build.

Change-Id: Ieb59aa7ab4b1e8da6a1002e7a8e5462eb7988d35
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5643
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/mainboard/intel/baskingridge/Makefile.inc b/src/mainboard/intel/baskingridge/Makefile.inc
index 80385d6..b215ad7 100644
--- a/src/mainboard/intel/baskingridge/Makefile.inc
+++ b/src/mainboard/intel/baskingridge/Makefile.inc
@@ -17,7 +17,7 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 ##
 
-romstage-$(CONFIG_CHROMEOS) += chromeos.c
-ramstage-$(CONFIG_CHROMEOS) += chromeos.c
+romstage-y += chromeos.c
+ramstage-y += chromeos.c
 
 smm-$(CONFIG_HAVE_SMI_HANDLER) += mainboard_smi.c