Pass neon option to compiler, not assembler, so ifdefs will work. BUG=371 TESTED=locally tested by arm R=harryjin@google.com
Pass neon option to compiler, not assembler, so ifdefs will work.
BUG=371
TESTED=locally tested by arm
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/32879004

git-svn-id: a51711482b6ba0e1d1ab095578a045eeae45ac9a@1210 16f28f9a-4ce2-e073-06de-1de4eb20be90

PeterXu/libyuv,labdong801/libyuv,xlncz/libyuv,lyx2014/libyuv_free,lyx2014/yuv,okumura/libyuv,disigma/yuv,lyx2014/yuv,yarrcc/libyuv-ios,PeterXu/libyuv,yarrcc/libyuv-ios,disigma/yuv,lemenkov/libyuv,PeterXu/libyuv,lyx2014/libyuv_free,lyx2014/libyuv_free,disigma/yuv,Bilibili/libyuv,xlncz/libyuv,lemenkov/libyuv,lemenkov/libyuv,jpxiong/libyuv,okumura/libyuv,yarrcc/libyuv-ios,lemenkov/libyuv,xlncz/libyuv,lyx2014/libyuv_free,lyx2014/yuv,lyx2014/yuv,xlncz/libyuv,Bilibili/libyuv,yarrcc/libyuv-ios,labdong801/libyuv,okumura/libyuv,godghdai/libyuv,jpxiong/libyuv,labdong801/libyuv,Bilibili/libyuv,jpxiong/libyuv,godghdai/libyuv,godghdai/libyuv