RFR: 8350585: InlineSecondarySupersTest must be guarded on ppc64 by COMPILER2

[Matthias Baesken]

In the minimal build we run into this error (e.g. on AIX) :

src/hotspot/cpu/ppc/stubGenerator_ppc.cpp:4894:12: error: use of undeclared identifier 'InlineSecondarySupersTest'
      if (!InlineSecondarySupersTest) {


The reason is the missing `COMPILER2` define check in the ppc64 coding.

-------------

Commit messages:
 - JDK-8350585

Changes: https://git.openjdk.org/jdk/pull/23753/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23753&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8350585
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/23753.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23753/head:pull/23753

PR: https://git.openjdk.org/jdk/pull/23753