OvmfPkg/PlatformPei: Allocate PEI FV as ACPI NVS if S3 is supported

OvmfPkg/PlatformPei: Allocate PEI FV as ACPI NVS if S3 is supported

On S3 resume, we skip decompression of the PEI FV, and expect
to jump directly into it. For this to work, we need the OS to
leave the memory range untouched.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15299 6f19259b-4bc3-4df7-8a09-765794883524