tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1

tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1

Update kcpuid's CSV file to version 2.1, as generated by x86-cpuid-db.

Summary of the v2.1 changes:

* Use a standardized style for all x86 trademarks, registers, opcodes,
  byte units, hexadecimal digits, and x86 technical terms. This was
  enforced by a number of x86-specific hunspell(5) dictionary and affix
  files at the x86-cpuid-db project's CI pipeline.

* Expand abbreviated terms that might be OK in code but not in official
  listings (e.g., "addr", "instr", "reg", "virt", etc.)

* Add new Zen5 SoC bits to leaf 0x80000020 and leaf 0x80000021.

Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v2.1/CHANGELOG.rst
Link: https://lore.kernel.org/r/20250324142042.29010-18-darwi@linutronix.de