google/nyan_blaze: Don't auto select CHROMEOS

Indicate to rest of coreboot that MAINBOARD_HAS_CHROMEOS
instead of auto-selecting it.

Change-Id: I61cde263f4ad7bd6758a61fc54c456c2ad2f343e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9153
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/nyan_blaze/Kconfig

@@ -23,13 +23,13 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
 	select ARCH_ARM
 	select BOARD_ID_SUPPORT
-	select CHROMEOS
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_SPI
 	select EC_SOFTWARE_SYNC
 	select SOC_NVIDIA_TEGRA124
 	select TEGRA124_MODEL_CD570M
 	select MAINBOARD_HAS_BOOTBLOCK_INIT
+	select MAINBOARD_HAS_CHROMEOS
 	select MAINBOARD_DO_NATIVE_VGA_INIT
 	select BOARD_ROMSIZE_KB_1024
 	select SPI_FLASH