[vectorIntrinsics] RFR: Post mainline merge fixes

[Sandhya Viswanathan]

On Fri, 25 Feb 2022 16:13:33 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

> - Post-merge fixes.
> - Updating JMH micros post merge since some of the Perf templates are not part of mainline branch and depends on Unit-Test Kernels which may have been modified in mainline.
> - Fixing Long*VectorTests.java tests for X86 target.

Marked as reviewed by sviswanathan (Committer).

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PR: https://git.openjdk.java.net/panama-vector/pull/175