Provide CmdMirror option in chip.h so that it can control CmdMirror FSP
UPD via dev tree.
BUG=b:156435028
BRANCH=none
TEST=FW_NAME=terrador emerge-volteer coreboot chromeos-bootimage
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Change-Id: Idae9fa439f077f8f3fb16fe74c2f263c008cd5f4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42276
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
63ce260a3e