soc/intel/xeon_sp: Add read CPU PPIN MSR function

These changes are in accordance with the documentation:
[*] page 208-209
    Intel(R) 64 and IA-32 Architectures, Software Developer’s Manual,
    Volume 4: Model-Specific Registers. May 2019.
    Order Number: 335592-070US

Tested on OCP Tioga Pass and Delta Lake.

Change-Id: I8c2eac055a065c06859a3cb7b48ed59f15ae2fc4
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42901
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions