RFR: 8373069: RISC-V: implement GHASH intrinsic [v2]

[Anjian Wen]

> support GHASH intrinsic for crypt GCM, which need zvkg extension. 
> 
> passed the tests in 
> test/hotspot/jtreg/compiler/codegen/aes/
> test/jdk/com/sun/crypto

Anjian Wen 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 three additional commits since the last revision:

 - Merge branch 'openjdk:master' into ghash_intrinsic
 - Add some flag
 - RISC-V: implement GHASH intrinsic

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/28548/files
  - new: https://git.openjdk.org/jdk/pull/28548/files/a0392dda..b59700b0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28548&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28548&range=00-01

  Stats: 25244 lines in 213 files changed: 16836 ins; 7396 del; 1012 mod
  Patch: https://git.openjdk.org/jdk/pull/28548.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28548/head:pull/28548

PR: https://git.openjdk.org/jdk/pull/28548