RFR: JDK-8329074: AIX build fails after JDK-8328824

[Matthias Baesken]

After [JDK-8328824](https://bugs.openjdk.org/browse/JDK-8328824), we run in the AIX build into this failure :

/opt/freeware/bin/bash: -c: line 1: syntax error near unexpected token `('
gmake[3]: *** [lib/CoreLibraries.gmk:194: /openjdk/nb/aix_ppc64/jdk-dev-opt/support/native/java.base/libjli_static/args.o] Error 2
gmake[3]: *** Waiting for unfinished jobs....

Looks like an addprefix usage is wrong, a '$' is missing.

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Commit messages:
 - JDK-8329074

Changes: https://git.openjdk.org/jdk/pull/18484/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18484&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8329074
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18484.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18484/head:pull/18484

PR: https://git.openjdk.org/jdk/pull/18484