x86/cpuid: Update bitfields to x86-cpuid-db v3.1

x86/cpuid: Update bitfields to x86-cpuid-db v3.1

Update leaf_types.h to version 3.1, as generated by x86-cpuid-db.

Summary of the v3.1 changes:

* Fix a few typos that were found during the kernel CPUID data model
  review. Also include fixes found using an LLM agent review, from Ahmed.

* Rename thrd_director_nclasses to hw_feedback_nclasses as it's the
  name used in Intel SDM.

See https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v3.1/CHANGELOG.rst
for more info.

Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/9653d8690ec7093c8190b12d1fa8c689c4da50fe.1780506200.git.m.wieczorretman@pm.me