RFR: 8327652: S390x: Implements SLP support

[Sidraya Jayagond]

This PR Adds SIMD support on s390x.

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Commit messages:
 - Remove extra spcaes
 - Implements SIMD support on s390x

Changes: https://git.openjdk.org/jdk/pull/18162/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18162&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327652
  Stats: 1155 lines in 16 files changed: 1091 ins; 12 del; 52 mod
  Patch: https://git.openjdk.org/jdk/pull/18162.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18162/head:pull/18162

PR: https://git.openjdk.org/jdk/pull/18162