mb/google/brya: select GOOGLE_SMBIOS_MAINBOARD_VERSION

Select GOOGLE_SMBIOS_MAINBOARD_VERSION allows querying
board revision from the EC.

BUG=b:186721096
TEST=1. emerge-brya coreboot chromeos-bootimage
     2. flash the image to the device and check board rev
        by using command `dmidecode -t 1 | grep Version`

Change-Id: I8eeb958f73607afb801794f91fbf91ec7bd5cd8b
Signed-off-by: Zhuohao Lee <zhuohao@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52754
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/mainboard/google/brya/Kconfig

@@ -13,6 +13,7 @@ config BOARD_GOOGLE_BASEBOARD_BRYA
 	select EC_GOOGLE_CHROMEEC_BOARDID
 	select EC_GOOGLE_CHROMEEC_ESPI
 	select EC_GOOGLE_CHROMEEC_SKUID
+	select GOOGLE_SMBIOS_MAINBOARD_VERSION
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_SPD_IN_CBFS