[code-reflection] RFR: Add DeviceType support for array views

[Ruby Chen]

Adding support for both MappableIface and DeviceType to array views. Also shifting the array view phase earlier in the compilation stages.

Minor refactoring for array view phase.

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Commit messages:
 - Add DeviceType support for array views

Changes: https://git.openjdk.org/babylon/pull/732/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=732&range=00
  Stats: 201 lines in 2 files changed: 112 ins; 5 del; 84 mod
  Patch: https://git.openjdk.org/babylon/pull/732.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/732/head:pull/732

PR: https://git.openjdk.org/babylon/pull/732