update STT setting for dewatt.
BUG=b:228040295
BRANCH=guybrush
TEST=build, verify the parameter has been applied to
the system by checking the AGT tool.
Signed-off-by: Chris.Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: Id319d42747dd0d5f6a9ca727635d85e6b9bd65af
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63699
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>