[code-reflection] Integrated: add cmake opencl stanza for non Apple machines

[Gary Frost]

Added cmake opts for opencl non apple.

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Commit messages:
 - add cmake opencl stanza for non Apple machines

Changes: https://git.openjdk.org/babylon/pull/88/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=88&range=00
  Stats: 113 lines in 1 file changed: 43 ins; 0 del; 70 mod
  Patch: https://git.openjdk.org/babylon/pull/88.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/88/head:pull/88

PR: https://git.openjdk.org/babylon/pull/88