Current MM IPL in PEI phase does not open the MMRAM regions through MM
access PPI. This is causing some platforms like OVMF reading all `0xFF`s
when trying to relocate the Standalone MM core.
This change opens all the MMRAM regions provided by MM access PPI and
closes + locks the regions after initial MM foundation setup, when MM
Access PPI is available.
Platforms that require MM access PPI can inject depex through libraries.
Signed-off-by: Kun Qin <kun.qin@microsoft.com>
73b0b5edae