mb/google/brya/var/dochi: use RPL FSP headers

To support an RPL SKU on dochi, it must use the FSP for RPL.

Select SOC_INTEL_RAPTORLAKE for dochi so that it will use the RPL
FSP headers.

BUG=b:299570339
TEST=emerge-brya intel-rplfsp coreboot
coreboot-private-files-baseboard-brya

Change-Id: I51c28744bd9f21fae58bad38abb01d38965140a4
Signed-off-by: Morris Hsu <morris-hsu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78323
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Wu <david_wu@quanta.corp-partner.google.com>

src/mainboard/google/brya/Kconfig

@@ -494,6 +494,7 @@ config BOARD_GOOGLE_NOKRIS
 
 config BOARD_GOOGLE_DOCHI
 	select BOARD_GOOGLE_BASEBOARD_BRYA
+	select SOC_INTEL_RAPTORLAKE
 
 if BOARD_GOOGLE_BRYA_COMMON