[jdk17u-dev] RFR: 8313878: Exclude two compiler/rtm/locking tests on ppc64le

[Goetz Lindenmaier]

A "Backport" from 11 as we see the tests failing here, too.

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Commit messages:
 - Backport 6faea22b528a459294d2c2ae425275dfba824396

Changes: https://git.openjdk.org/jdk17u-dev/pull/2957/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2957&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313878
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2957.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2957/head:pull/2957

PR: https://git.openjdk.org/jdk17u-dev/pull/2957