[code-reflection] Integrated: Clion CMakeLists.txt updates for ubuntu opencl

[Gary Frost]

Clions CMakeLists for building backends updated.

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Commit messages:
 - Clion CMakeLists.txt updates for ubuntu opencl

Changes: https://git.openjdk.org/babylon/pull/90/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=90&range=00
  Stats: 59 lines in 1 file changed: 29 ins; 26 del; 4 mod
  Patch: https://git.openjdk.org/babylon/pull/90.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/90/head:pull/90

PR: https://git.openjdk.org/babylon/pull/90