RFR: 8345289: RISC-V: enable some extensions with hwprobe [v2]

[Hamlin Li]

> Hi,
> Can you help to review the patch?
> Currently, some extensions are not enable automatically with hwprobe, this is to enable them with hwprobe result.
> 
> Thanks!
> 
> Tests running so far so good.

Hamlin Li has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains three commits:

 - merge master
 - only enable Zicboz
 - initial commit

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Changes: https://git.openjdk.org/jdk/pull/22474/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22474&range=01
  Stats: 4 lines in 2 files changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22474.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22474/head:pull/22474

PR: https://git.openjdk.org/jdk/pull/22474