tree 496bf16dbe4660e4a6a267df4f563dc4bae1a851
parent 2c2eccb3796179664ccda7e1f9b981aad0c2e3ef
author Miao Wang <miaowang@google.com> 1524183281 -0700
committer Miao Wang <miaowang@google.com> 1524183281 -0700

Make slang able to take target API level 27 and 28

  - Add enums corresponding O-MR1 and P.
  - Internally, treat them as N since no new APIs added.

Bug: 72969487
Test: mm
Test: llvm-rs-cc can take target api 27 and 28, and generated code works
on N emulator and ToT walleye.

Change-Id: I37979fe359aee117229182cdd198f5305dd22cd1