mb/google/volteer: disable TBT if no USB4 hardware available

Implement mainboard_silicon_init_params() to allow for disabling of
TBT root ports if the device does not have usb4 hardware.

Add code to mainboard_memory_init_params() to disable memory-related
settings associated with TBT in cases where no usb4 is available.

BUG=b:167983038
TEST=none

Change-Id: Iab23c07e15f754ca807f128b9edad7fdc9a44b9d
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45946
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

0 files changed, 0 insertions, 0 deletions