[code-reflection] Integrated: Forgot to add MethodCall iface in last PR

[Gary Frost]

Apologies. I forgot to include MethodCall interface in last  PR.

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Commit messages:
 - Forgot to add MethodCall iface in last PR

Changes: https://git.openjdk.org/babylon/pull/879/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=879&range=00
  Stats: 32 lines in 1 file changed: 32 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/879.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/879/head:pull/879

PR: https://git.openjdk.org/babylon/pull/879