RFR: 8315195: RISC-V: Update hwprobe query for new extensions

Tue Aug 29 07:13:31 UTC 2023

Hi all, please consider.

Linux 6.5 added new extensions to hwprobe.
Manually tested with qemu patch: https://lists.nongnu.org/archive/html/qemu-devel/2023-08/msg04784.html
And https://bugs.openjdk.org/browse/JDK-8315206 applied.

Also cleanup vendor path, the goal is to only have vendor specific extension in vendor paths.

Thanks!

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Commit messages:
 - Add new ext and adjust vendor path

Changes: https://git.openjdk.org/jdk/pull/15465/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15465&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315195
  Stats: 29 lines in 2 files changed: 16 ins; 13 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15465.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15465/head:pull/15465

PR: https://git.openjdk.org/jdk/pull/15465