RFR: 8310949: RISC-V: Initialize UseUnalignedAccesses

[Ludovic Henry]

8310949: RISC-V: Initialize UseUnalignedAccesses

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Commit messages:
 - 8310949: RISC-V: Initialize UseUnalignedAccesses

Changes: https://git.openjdk.org/jdk/pull/14676/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14676&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310949
  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14676.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14676/head:pull/14676

PR: https://git.openjdk.org/jdk/pull/14676