RFR: 8322174: RISC-V: C2 VectorizedHashCode RVV Version

[Yuri Gaevsky]

The patch adds possibility to use RVV instructions for faster vectorizedHashCode calculations on RVV v1.0.0 capable hardware.

Testing: hotspot/jtreg/compiler/ under QEMU-8.1 with RVV v1.0.0.

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Commit messages:
 - 8322174: RISC-V: C2 VectorizedHashCode RVV Version

Changes: https://git.openjdk.org/jdk/pull/17413/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17413&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322174
  Stats: 422 lines in 7 files changed: 421 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17413.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17413/head:pull/17413

PR: https://git.openjdk.org/jdk/pull/17413