git: openjdk/jdk: 8319781: RISC-V: Refactor UseRVV related checks

[Hamlin Li]

Changeset: fac6b516
Author:    Hamlin Li <mli at openjdk.org>
Date:      2023-11-15 09:51:14 +0000
URL:       https://git.openjdk.org/jdk/commit/fac6b51699d71440a38c24dfa1594476cb073873

8319781: RISC-V: Refactor UseRVV related checks

Reviewed-by: rehn, fyang

! src/hotspot/cpu/riscv/riscv.ad
! src/hotspot/cpu/riscv/vm_version_riscv.cpp