mainboard: Get CHROMEOS/MAINBOARD_HAS_CHROMEOS right (again)

CHROMEOS is a user-visible bool. It must not be 'select'ed in Kconfig.
That's why we have MAINBOARD_HAS_CHROMEOS. This is the fifth time I
find this being used wrong.
Why is this confusing/so hard to get right?

Change-Id: Icb4629355c63508f5a044b46842524b3d203c2da
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/11290
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/cyan/Kconfig

@@ -5,7 +5,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select VGA_ROM_RUN if !PAYLOAD_SEABIOS
 	select ALWAYS_LOAD_OPROM if !PAYLOAD_SEABIOS
 	select BOARD_ROMSIZE_KB_8192
-	select CHROMEOS
 	select CHROMEOS_VBNV_CMOS
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_MEC

src/mainboard/google/glados/Kconfig

@@ -4,7 +4,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select BOARD_ROMSIZE_KB_16384
 	select CACHE_ROM
-	select CHROMEOS
 	select CHROMEOS_RAMOOPS_DYNAMIC
 	select CHROMEOS_VBNV_CMOS
 	select EC_GOOGLE_CHROMEEC

src/mainboard/intel/kunimitsu/Kconfig

@@ -4,7 +4,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select BOARD_ROMSIZE_KB_16384
 	select CACHE_ROM
-	select CHROMEOS
 	select CHROMEOS_RAMOOPS_DYNAMIC
 	select CHROMEOS_VBNV_CMOS
 	select EC_GOOGLE_CHROMEEC

src/mainboard/intel/sklrvp/Kconfig

@@ -4,7 +4,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select BOARD_ROMSIZE_KB_16384
 	select CACHE_ROM
-	select CHROMEOS
 	select CHROMEOS_RAMOOPS_DYNAMIC
 	select CHROMEOS_VBNV_CMOS
 	select HAVE_ACPI_RESUME

src/mainboard/intel/strago/Kconfig

@@ -5,7 +5,6 @@ config BOARD_SPECIFIC_OPTIONS
 	select VGA_ROM_RUN if !PAYLOAD_SEABIOS
 	select ALWAYS_LOAD_OPROM if !PAYLOAD_SEABIOS
 	select BOARD_ROMSIZE_KB_8192
-	select CHROMEOS
 	select CHROMEOS_VBNV_CMOS
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_MEC