mb/google/arcada: add Kconfig option to enable WLAN SAR

Enable WLAN SAR power table.

BUG=b:123552641
TEST=Verified WLAN SAR power table forllows VPD setting

Signed-off-by: Casper Chang <casper_chang@wistron.corp-partner.google.com>
Change-Id: I882b1c7ed0b1142a84eb338142e1c984df45eeba
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31859
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

src/mainboard/google/sarien/Kconfig

@@ -25,6 +25,8 @@ config BOARD_GOOGLE_BASEBOARD_SARIEN
 	select TPM2
 	select MAINBOARD_USES_IFD_EC_REGION
 	select MAINBOARD_USES_IFD_GBE_REGION if BOARD_GOOGLE_SARIEN
+	select USE_SAR
+	select SAR_ENABLE
 
 if BOARD_GOOGLE_BASEBOARD_SARIEN