soc/intel/elkhartlake: Enable PCH GBE

Enable PCH GBE with following changes:
1. Configure PCH GBE related FSP UPD flags
2. Use EHL own GBE ACPI instead of common code version due to
   different B:D.F from the usual GBE
3. Add kconfig PMC_EPOC to use the PMC XTAL read function

Due to EHL GBE comes with time sensitive networking (TSN)
capability integrated, EHL FSP is using 'PchTsn' instead of the
usual 'PchLan' naming convention across the board.

Signed-off-by: Lean Sheng Tan <lean.sheng.tan@intel.com>
Change-Id: I6b0108e892064e804693a34e360034ae7dbee68f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55355
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions