mb/google/volteer/drobit: Add a board-specific VBT file

Add a board-specific VBT file compatible with the latest FSP release
(requires VBT version 250).

TODO: Update all other volteer VBTs to v250 from v240.

TEST=build/boot google/volteer (drobit) with edk2 payload

Change-Id: Ie25a77be5204dfc8b888082492a285973843037c
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80183
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/mainboard/google/volteer/Kconfig b/src/mainboard/google/volteer/Kconfig
index 202d8f1..d1d5df0 100644
--- a/src/mainboard/google/volteer/Kconfig
+++ b/src/mainboard/google/volteer/Kconfig
@@ -180,7 +180,8 @@
 
 config INTEL_GMA_VBT_FILE
 	default "src/mainboard/\$(MAINBOARDDIR)/variants/\$(VARIANT_DIR)/data.vbt" \
-		if BOARD_GOOGLE_ELEMI || BOARD_GOOGLE_LINDAR || BOARD_GOOGLE_VOEMA
+		if BOARD_GOOGLE_ELEMI || BOARD_GOOGLE_LINDAR || \
+		   BOARD_GOOGLE_VOEMA || BOARD_GOOGLE_DROBIT
 	default "src/mainboard/\$(MAINBOARDDIR)/variants/baseboard/data.vbt" if INTEL_GMA_HAVE_VBT
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/google/volteer/variants/drobit/data.vbt b/src/mainboard/google/volteer/variants/drobit/data.vbt
new file mode 100644
index 0000000..f066fbd
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/drobit/data.vbt
Binary files differ