This patch adds a parser of CPU identification information reported by the
CPUID instruction.
The framework is based on the CPUID parsing facilities in
BITS (https://biosbits.org/), but with the following changes.
1. The CPUID data is fetched by executing the `cpuid` utility, rather than
executing the `cpuid` instruction. This avoids introducing any
additional library or Python/C extension and gets a CPUID leaf on all
physical cores in one shot.
2. Parsers of CPUID leaves 0x10, 0x1A and 0x1F are added. New fields in
existing leaves are also added.
3. A wrapper function, named `parse_cpuid`, is added as the single API that
allows other modules to get an arbitrary CPUID leaf or subleaf.
Tracked-On: #5922
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
