Platform/Sgi: Extend SMBIOS support for RD-Fremont

Extend the SMBIOS support for RD-Fremont platform. RD-Fremont is a
16 core platform with Poseidon CPU. Each of the CPUs include
64KB L1 Data cache, 64KB L1 Instruction cache and 2MB L2 cache.
The platform also includes system level cache of 32MB and 8GB of RAM.

Signed-off-by: Prabin CA <prabin.ca@arm.com>