RFR: 8321539: Minimal build is broken by JDK-8320935

[Ioi Lam]

Please review this trivial fix. `CDSConfig::check_vm_args_consistency()` should trivially return `true` on platforms that don't support CDS

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Commit messages:
 - 8321539: Minimal build is broken by JDK-8320935

Changes: https://git.openjdk.org/jdk/pull/17020/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17020&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8321539
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17020.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17020/head:pull/17020

PR: https://git.openjdk.org/jdk/pull/17020