RFR: 8267616: AArch64: Fix AES assertion messages in stubGenerator_aarch64.cpp

[Dong Bo]

Trivial fix for the messages of `assert(UseAES, "need AES instructions and misaligned SSE support")` in stubGenerator_aarch64.cpp.
The SSE instruction set is an extension to the x86 architecture. On aarch64, AES cryptographic extension are used for these intrinsics.

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Commit messages:
 - 8267616: AArch64: Fix AES assertion messages in stubGenerator_aarch64.cpp

Changes: https://git.openjdk.java.net/jdk/pull/4259/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4259&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267616
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4259.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4259/head:pull/4259

PR: https://git.openjdk.java.net/jdk/pull/4259