Platform/Sgi: ACPI PPTT table for RD-N1-Edge Dual

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: Iac7db22b6f824c4bec1e3a908c142cca68a2cdfc
Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>