Platform/Sgi: ACPI PPTT Table for RD-V1 MC

Processor Properties Topology Table (PPTT) to describe the topological
structure of Processors as a hierarchical tree. PPTT also describes the
Cache private to each node in the hierarchy, and the vendor specific
information regarding the SoC package.

Change-Id: I4e072290cac5b2c4253e8c44795823e1a139c61c
Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>