RFR: 8361504: RISC-V: Make C1 clone intrinsic platform guard more specific

[Fei Yang]

On Mon, 7 Jul 2025 15:03:52 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

> Hi all.
> Please review this trivial patch, which changes the C1 primitive array clone intrinsic RISCV platform guard into RISCV64. As we only support RISCV64 for now.

Thanks.

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Marked as reviewed by fyang (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/26161#pullrequestreview-2995642785