mb/google/reef: Add and use VBT

Add VBT file, and override use via Kconfig since all Reef variants
use the same VBT file.

VBT extracted from firmware in ChromeOS recovery image.

Test: built/boot google/reef w/FSP display init

Change-Id: I31156ec7371c0443719fdd9ddac6ed4960c83767
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40926
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/mainboard/google/reef/Kconfig

@@ -12,6 +12,7 @@ config BOARD_GOOGLE_BASEBOARD_REEF
 	select EC_GOOGLE_CHROMEEC_LPC
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
+	select INTEL_GMA_HAVE_VBT
 	select INTEL_LPSS_UART_FOR_CONSOLE
 	select MAINBOARD_HAS_CHROMEOS
 	select MAINBOARD_HAS_I2C_TPM_CR50
@@ -103,4 +104,8 @@ config PRERAM_CBMEM_CONSOLE_SIZE
 config FMDFILE
 	default "src/mainboard/$(CONFIG_MAINBOARD_DIR)/default.fmd" if !CHROMEOS
 
+# Override the default behavior, since the data.vbt is the same for all variants
+config INTEL_GMA_VBT_FILE
+	default "src/mainboard/$(MAINBOARDDIR)/data.vbt"
+
 endif # BOARD_GOOGLE_REEF