grunt: Enable bayhub tuning

This allows us to enable the 200Mhz clock.

BRANCH=grunt
BUG=b:122244718
TEST=Verified tuning was working on grunt with both the 52Mhz clock and
the 200Mhz clock. A coreboot patch is required to change the clock
speed.
vb2_load_partition: read 8419 KB in 184ms at 45651 KB/s.

vb2_load_partition: read 8419 KB in 47ms at 175567 KB/s.

You can see the training log here: https://0paste.com/29923-475c04e0

Change-Id: Id21d7df08d498308b498189c5bc23e3875b3761e
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/depthcharge/+/1655553
Reviewed-by: Julius Werner <jwerner@chromium.org>
2 files changed