Platform/Sgi: Extend SMBIOS support for RD-V2 platform

The Neoverse RD-V2 FVP platform includes 16 CPUs and each CPU has 64KB
of L1 instruction/data cache, 2MB of L2 cache and 32MB of system level
cache. Extend the SMBIOS support for RD-V2 platform with this
configuration.

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