Cherry pick "Rename neon convolve avg file"

Upstream 66b9933b8d2b329a8555be0c53a409cb548605ed

Fixes a build issue with 64bit iOS due to the object files
using 'basename' instead of the full path.

TBR=tomfinegan@chromium.org

Review URL: https://codereview.chromium.org/1089243007
7 files changed