soc/amd/picasso: Add eMMC driver strength and init kHz settings
This allows passing in the presets to FSP.
I will set the UPD values after all the zork boards have had their
presets correctly set. This way we don't override the UPD defaults with
0s.
BUG=b:
159823235
TEST=Build test
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I44951cacb1e9d788016a70283cf9688bf88a09f4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45097
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>