ACPI 6.0 Errata and 6.1 support for fwts

[Alex Hung]

According to Revision History and current FWTS implementation, the following mantis are TODO for FWTS to support ACPI 6.1

1406 NFIT RAMDisk Update
1470 Region Format Interface Code clarification
1356 ARM APEI extensions
1361 Clarify _PIC Method on ARM
1395 _DSM interfaces associated with NVDIMM-N objects
1483 NFIT SPD extensions and clarifications
1427 Addition to Memory Device State Flags in NFIT
1512 Microsoft feedbacks on ACPI 6.1 draft 2

[Alex Hung (alexhung)]

1406 NFIT RAMDisk Update is included by nfit test in commit d11965d8346b

[Alex Hung (alexhung)]

1470 Region Format Interface Code clarification is clarification and needs no changes in fwts in nfit test

[Alex Hung (alexhung)]

1356 ARM APEI extensions is implemented by commit d3dab7d7fd4a and cce470edf1a9

[Alex Hung (alexhung)]

1361 Clarify _PIC Method on ARM is clarification and needs no changes in fwts

[Alex Hung (alexhung)]

1395 _DSM interfaces associated with NVDIMM-N objects - device specific method (_DSM) is not yet supported by fwts

[Alex Hung (alexhung)]

1483 NFIT SPD extensions and clarifications is mostly included by nfit test in commit d11965d8346b

[Alex Hung (alexhung)]

1427 Addition to Memory Device State Flags in NFIT is included by nfit test in commit d11965d8346b

[Alex Hung (alexhung)]

1512 Microsoft feedbacks on ACPI 6.1 draft 2 needs no updates in fwts