RFR: 8367478: Improve UseAVX setting and add cpu descriptions for zhaoxin processors [v2]

[Vic Wang]

> Here is the patch that improving the UseAVX setting and add cpu descriptions for zhaoxin processors.
> Can you help to review this patch?
> Thank you!

Vic Wang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'openjdk:master' into master-20250911
 - Improve UseAVX setting and add cpu descriptions for zhaoxin processors.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27241/files
  - new: https://git.openjdk.org/jdk/pull/27241/files/06498b42..c75c0eff

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27241&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27241&range=00-01

  Stats: 599769 lines in 7696 files changed: 414246 ins; 115374 del; 70149 mod
  Patch: https://git.openjdk.org/jdk/pull/27241.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27241/head:pull/27241

PR: https://git.openjdk.org/jdk/pull/27241