[jfx17u] RFR: 8293214: Add support for Linux/LoongArch64

[Ao Qi]

Clean backport. Verified on Linux/LoongArch64, Linux/x64 and Linux/aarch64.

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Commit messages:
 - 8293214: Add support for Linux/LoongArch64

Changes: https://git.openjdk.org/jfx17u/pull/102/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx17u&pr=102&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293214
  Stats: 26 lines in 4 files changed: 15 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jfx17u/pull/102.diff
  Fetch: git fetch https://git.openjdk.org/jfx17u pull/102/head:pull/102

PR: https://git.openjdk.org/jfx17u/pull/102