RFR: JDK-8307908: [ppc] Add failing RTM tests to ProblemList until 8307907 is fixed.

Mon May 22 10:25:55 UTC 2023

>From JDK-8307907: 
The support of Transactional Memory has been removed in the Power 10 processor.
The removed instructions are still recognized, but all locking fails. This makes some jtreg tests fail.
Remove implementation from ppc port.
Disable corresponding jtreg tests.
Remove entries refering to ppc from ProblemLists.

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Commit messages:
 - Update ProblemList.txt:
 - Merge branch 'openjdk:master' into JDK-8307908
 - JDK-8307908

Changes: https://git.openjdk.org/jdk/pull/14036/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14036&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307908
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/14036.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14036/head:pull/14036

PR: https://git.openjdk.org/jdk/pull/14036