RFR: 8345591: [aarch64] macroAssembler_aarch64.cpp compile fails ceil_log2 not declared

[Kim Barrett]

Please review this trivial change to fix the name of a function in a call.
This change:
JDK-8343699: [aarch64] Bug in MacroAssembler::klass_decode_mode()
used the name ceil_log2, but that function was recently renamed to log2i_ceil by
JDK-8344568.

Testing: mach5 tier1 for linux-aarch64

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Commit messages:
 - fix function name

Changes: https://git.openjdk.org/jdk/pull/22579/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22579&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345591
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22579.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22579/head:pull/22579

PR: https://git.openjdk.org/jdk/pull/22579