RFR: 8347366: RISC-V: Add extension asserts for CMO instructions [v2]

[Robbin Ehn]

On Fri, 17 Jan 2025 14:44:27 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Review comments
>
> Looks good.

Thank you @Hamlin-Li !

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PR Comment: https://git.openjdk.org/jdk/pull/23015#issuecomment-2599641368