vboot: Separate vboot from chromeos

VBOOT_VERIFY_FIRMWARE should be independent of CHROMEOS. This allows use
of verified boot library without having to stick to CHROMEOS.

BUG=chrome-os-partner:55639

Change-Id: Ia2c328712caedd230ab295b8a613e3c1ed1532d9
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15867
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

src/soc/intel/apollolake/Kconfig

@@ -59,13 +59,13 @@ config CPU_SPECIFIC_OPTIONS
 
 config CHROMEOS
 	select CHROMEOS_RAMOOPS_DYNAMIC
-	select CHROMEOS_VBNV_CMOS
-	select CHROMEOS_VBNV_CMOS_BACKUP_TO_FLASH
 	select EC_SOFTWARE_SYNC if EC_GOOGLE_CHROMEEC
 	select SEPARATE_VERSTAGE
 	select VBOOT_OPROM_MATTERS
 	select VBOOT_SAVE_RECOVERY_REASON_ON_REBOOT
 	select VBOOT_STARTS_IN_BOOTBLOCK
+	select VBOOT_VBNV_CMOS
+	select VBOOT_VBNV_CMOS_BACKUP_TO_FLASH
 	select VIRTUAL_DEV_SWITCH
 
 config TPM_ON_FAST_SPI