Implement ARM64 version of OpenMAX DL

This is a conversion of the existing ARM NEON OpenMAX DL FFT routines
to arm64. The translation was done by hand and mostly just uses the
correct register names and instructions for ARM64.

The test_float_fft and test_float_rfft programs pass with SNRs
basically equivalent to the original ARM NEON version.

BUG=
R=andrew@webrtc.org, leecam@google.com

Review URL: https://webrtc-codereview.appspot.com/14539004

git-svn-id: http://webrtc.googlecode.com/svn/deps/third_party/openmax@6477 4adac7df-926f-26a2-2b94-8c16560cd09d
23 files changed
tree: dc39317647c814f58ac25fa0c33f7f2c23ac789c
  1. LICENSE
  2. OWNERS
  3. README.chromium
  4. dl/