soc/intel/common/acpi: Create helper APIs for common P2SB access

This patch creates a helper library to migrate all the common P2SB
access routines. The PCH P2SB ACPI implementation will now rely on the
common library to perform PCR read/write operations. This will make the
code more modular and easier to maintain.

The helper library provides a single interface for accessing P2SB
registers. This makes it easier to port the code to different platforms,
for example: adding support for PS2B belongs to the IOE die for
Meteor Lake SoC generation.

BUG=b:290856936
TEST=Able to build and boot google/rex.

Change-Id: I0b2e7ea416ca7082f68d0b822ebb9a87025b4a8b
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76408
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions