[riscv-port-jdk17u:riscv-port] RFR: 8295968: RISC-V: Rename some assembler intrinsic functions for RVV 1.0

[Dingli Zhang]

Please review this backport to riscv-port-jdk17u.
Backport of [JDK-8295968](https://bugs.openjdk.org/browse/JDK-8295968). Applies cleanly with command `patch`.

Just rename, build success.

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Commit messages:
 - 8295968: RISC-V: Rename some assembler intrinsic functions for RVV 1.0

Changes: https://git.openjdk.org/riscv-port-jdk17u/pull/39/files
 Webrev: https://webrevs.openjdk.org/?repo=riscv-port-jdk17u&pr=39&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295968
  Stats: 10 lines in 4 files changed: 0 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/riscv-port-jdk17u/pull/39.diff
  Fetch: git fetch https://git.openjdk.org/riscv-port-jdk17u.git pull/39/head:pull/39

PR: https://git.openjdk.org/riscv-port-jdk17u/pull/39