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

[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!

-------------

Commit messages:
 - Improve UseAVX setting and add cpu descriptions for zhaoxin processors.

Changes: https://git.openjdk.org/jdk/pull/27241/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27241&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367478
  Stats: 37 lines in 1 file changed: 34 ins; 0 del; 3 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