google/oak: Enable SPI support

BUG=none
TEST=emerge-oak coreboot
BRANCH=none

[pg: split into multiple commits]

Change-Id: I19f970db40fb8563ef1b782a9606ca3766ef2ac5
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 41acc14e9fe54924d20e4e5a2d1519251f0e1c87
Original-Change-Id: I2559be4191da9af523944563729171bd92a86cd0
Original-Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/292661
Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com>
Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/13076
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed