ACPI: PCC: Add PCC shared memory region command and status bitfields

mainline inclusion
from mainline-v6.7-rc1
commit 55d235ebb684b993b3247740c1c8e273f8af4a54
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8GQ30
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=55d235ebb684b993b3247740c1c8e273f8af4a54

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Define the common macros to use when referring to various bitfields in
the PCC generic communications channel command and status fields.

Currently different drivers that need to use these bitfields have defined
these locally. This common macro is intended to consolidate and replace
those.

Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20230927-pcc_defines-v2-1-0b8ffeaef2e5@arm.com


Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>