google/veyron: Fix building with CHROMEOS enabled

romstage requires some button accessor functions for the Chrome OS boot flow.

Change-Id: I3f90d66b103e0610931c183dd5f5679ca6f910f6
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10697
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

src/mainboard/google/veyron_brain/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-y += reset.c

src/mainboard/google/veyron_danger/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdmmc.c
 romstage-y += sdram_configs.c

src/mainboard/google/veyron_jerry/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-y += reset.c

src/mainboard/google/veyron_mickey/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-y += reset.c

src/mainboard/google/veyron_mighty/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-y += reset.c

src/mainboard/google/veyron_rialto/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-y += reset.c

src/mainboard/google/veyron_romy/Makefile.inc

@@ -26,6 +26,7 @@ verstage-y += chromeos.c
 verstage-y += reset.c
 
 romstage-y += boardid.c
+romstage-y += chromeos.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-y += reset.c