RFR: 8315195: RISC-V: Update hwprobe query for new extensions [v2]

[Robbin Ehn]

On Fri, 1 Sep 2023 03:14:47 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   pre-6.5 kernel support
>
> Marked as reviewed by fjiang (Committer).

Thanks @feilongjiang !

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PR Comment: https://git.openjdk.org/jdk/pull/15465#issuecomment-1702151225