This change enables support for em100 for Picasso platform. Since
em100 requires lower SPI speed, this change configures speed in all
modes as 16MHz.
BUG=b:147758054,b:153675510
BRANCH=trembyle-bringup
TEST=Verified that em100 works fine on trembyle.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ib5ea1fe094fda9b8dba63e94b37e61791629564f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40825
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
0eabe139e5