Add ARM64_SOC_ID in ProcessorCharacteristics

[Kevin19961023]

The Bit 9 in "Processor Characteristics" is "Arm64 SoC ID" defined by SMBIOS specification.

Arm64 SoC ID indicates that the processor supports returning a SoC ID value using the SMCCC_ARCH_SOC_ID architectural call, as defined in the Arm SMC Calling Convention Specification v1.2 at https://developer.arm.com/architectures/system-architectures/software-standards/smccc.

We need to expose this flag from struct ProcessorCharacteristics and then we can parse the cpuid in different ways as same as the dmidecode CLI code.