Implement a NEON version of morphology. This is good for ~2.2X speedup on Tegra3.

R=mtklein@google.com, mtklein, reed@google.com

Review URL: https://codereview.chromium.org/68123003

git-svn-id: http://skia.googlecode.com/svn/trunk@12219 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed