google/storm: enable virtual development mode switch

The whirlwind device is using a button instead of the switch to enable
dev mode.

BRANCH=storm
BUG=chrome-os-partner:36059
TEST=with the rest of the patches applied it is possible to enable and
     disable dev mode on Whirlwind and the mode persists over reboots.

Change-Id: I6d31c8429ea0515bea2b7d707325d9092487048a
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 495bd07e3a1d6c587a5f01efa2801d2c4e7edbe8
Original-Change-Id: I8879833ca13074e8275393c3b98df06d56a5361d
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/261416
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/9875
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2 files changed