RFR: 8302452: [JVMCI] Export _poly1305_processBlocks, JfrThreadLocal fields to JVMCI compiler.

[Yudi Zheng]

This PR allows JVMCI compiler to reuse the _poly1305_processBlocks stub and to update JfrThreadLocal fields on `Thread.setCurrentThread` events.

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Commit messages:
 - Export _poly1305_processBlocks, JfrThreadLocal fields to JVMCI compiler.

Changes: https://git.openjdk.org/jdk/pull/12560/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12560&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8302452
  Stats: 12 lines in 3 files changed: 12 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12560.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12560/head:pull/12560

PR: https://git.openjdk.org/jdk/pull/12560