[jdk8u-dev] RFR: 8365560: [jdk8u] ppc64le MaxRAM default is too low at 4GiB

[Jonathan Dowland]

Bump the default value of MaxRAM from 4GiB to 128GiB on PPC64, aligning with the other 64bit ports.

This change was made as part of a bundle of clean-ups in JDK11 (JDK-8194814), but here I do not attempt to backport the other changes.

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Commit messages:
 - 8365560: [jdk8u] ppc64le MaxRAM default is too low at 4GiB

Changes: https://git.openjdk.org/jdk8u-dev/pull/675/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=675&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8365560
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/675.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/675/head:pull/675

PR: https://git.openjdk.org/jdk8u-dev/pull/675