soc/amd/common/espi,mb/: Allow configuring open drain ALERT#

Some designs might wish to use an open drain eSPI ALERT#. This change
adds an enum that allows setting the eSPI alert mode.

BUG=b:187122344, b:186135022
TEST=Boot guybrush using all 3 alert modes

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Ia35fc59a699cf9444b53aad5c9bb71aa27ce9251
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52954
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

0 files changed, 0 insertions, 0 deletions