mb/google/brya/var/riven: Copy VBT data file from nivviks

Add data.vbt file for riven recovery image. Select INTEL_GMA_HAVE_VBT
for riven as it has a VBT file now.
The VBT file is copied from the nivviks reference board.

BUG=b:337169542
TEST=build pass

Change-Id: I499c1b3e61581483a1640375270f7707ebe8deeb
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82269
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/Kconfig

@@ -446,6 +446,7 @@ config BOARD_GOOGLE_REDRIX4ES
 
 config BOARD_GOOGLE_RIVEN
 	select BOARD_GOOGLE_BASEBOARD_NISSA
+	select INTEL_GMA_HAVE_VBT
 	select SOC_INTEL_TWINLAKE
 
 config BOARD_GOOGLE_SKOLAS