Add marshaling and unmarshaling support for cr50 vendor sub-command to
reset EC and a interface function to exchange the same.
BUG=b:181051734
TEST=Build and boot to OS in drawlat. Ensure that when the command is
issued, EC reset is triggered.
Change-Id: I46063678511d27fea5eabbd12fc3af0b1df68143
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51164
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>