[jdk21u] Integrated: 8319525: RISC-V: Rename *_riscv64.ad files to *_riscv.ad under riscv/gc

[Fei Yang]

On Wed, 8 Nov 2023 02:29:40 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Clean backport to make possible future backports to those AD files smooth.
> 
> Testing:
> - [x] GHA
> - [x] hotspot:tier1 on linux-riscv64

This pull request has now been integrated.

Changeset: 7091631c
Author:    Fei Yang <fyang at openjdk.org>
URL:       https://git.openjdk.org/jdk21u/commit/7091631c5f216765f19c57825bb9e9ee0af428d3
Stats:     0 lines in 3 files changed: 0 ins; 0 del; 0 mod

8319525: RISC-V: Rename *_riscv64.ad files to *_riscv.ad under riscv/gc

Backport-of: b2504a0f9cff1f4fdf8f5bb20c4b48a53ba0be77

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PR: https://git.openjdk.org/jdk21u/pull/338