[code-reflection] RFR: [hat] Use of C99CodeBuilder to build the IR for a deviceType

[Juan Fumero]

[hat] Use of C99CodeBuilder to build the IR for a deviceType

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Commit messages:
 - [hat] Use of C99CodeBuilder to build the IR for a deviceType

Changes: https://git.openjdk.org/babylon/pull/704/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=704&range=00
  Stats: 99 lines in 3 files changed: 74 ins; 4 del; 21 mod
  Patch: https://git.openjdk.org/babylon/pull/704.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/704/head:pull/704

PR: https://git.openjdk.org/babylon/pull/704