vendorcode/google/chromeos: Fill in firmware ID regions

Chrome OS images have three firmware ID regions, to store version
information for the read-only and the two read-write areas. Fill them
with a suitable default and allow configuring a different scheme.

There's already an override in google/foster and google/rotor to match
the naming scheme used so far (in depthcharge).

BUG=chromium:595715
BRANCH=none
TEST=/build/$board/firmware/coreboot.rom has the expected values in the
regions.

Change-Id: I5fade5971135fa0347d6e13ec72909db83818959
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: d2e3be81faa8d21f92325294530714a4b18a1b3e
Original-Change-Id: I2fa2d51eacd832db6864fb67b6481b4d27889f52
Original-Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/417320
Original-Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Original-Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Reviewed-on: https://review.coreboot.org/17788
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/google/veyron_mickey/Kconfig b/src/mainboard/google/veyron_mickey/Kconfig
index d1a481f..1a94831 100644
--- a/src/mainboard/google/veyron_mickey/Kconfig
+++ b/src/mainboard/google/veyron_mickey/Kconfig
@@ -72,4 +72,9 @@
 	string
 	depends on CHROMEOS
 	default "MICKEY TEST A-A 0352"
+
+config CHROMEOS_FWID_MODEL
+	string
+	default "Google_Veyron_Mickey"
+
 endif #  BOARD_GOOGLE_VEYRON_MICKEY