Fix the build failure for arm64
Fix the build failure for arm64

TESTED=libyuv_unittest
BUG=357
R=fbarchard@google.com

aberejohn/libyuv,chucvv/libyuv,WangYongHai/libyuv,KerwinMa/libyuv,sathishkumars3/libyuv,mosterta/libyuv,syoshimu/libyuv,StopProducing/libyuv,alfahim/libyuv,fate-extra/libyuv,RockySteveJobs/libyuv,KerwinMa/libyuv,wl-chuang/libyuv,VladDrake/libyuv,hyper123/libyuv,bingerZhang/libyuv,Vairn/libyuv,OrenHg/libyuv,uditkumawat/libyuv,yzhikan/libyuv,uraran/libyuv,hyper123/libyuv,skufog/libyuv,mosterta/libyuv,gigakuma/libyuv,yzhikan/libyuv,sathishkumars3/libyuv,mosterta/libyuv,chucvv/libyuv,syoshimu/libyuv,Vairn/libyuv,StopProducing/libyuv,dexcz/libyuv,ganzhijie/libyuv,sathishkumars3/libyuv,OrenHg/libyuv,KerwinMa/libyuv,gigakuma/libyuv,alfahim/libyuv,WangYongHai/libyuv,bingerZhang/libyuv,ganzhijie/libyuv,dilagurung/libyuv,yzhikan/libyuv,hyper123/libyuv,dexcz/libyuv,gigakuma/libyuv,VladDrake/libyuv,uraran/libyuv,RockySteveJobs/libyuv,aberejohn/libyuv,uraran/libyuv,StopProducing/libyuv,dexcz/libyuv,hajunho/libyuv,hajunho/libyuv,aberejohn/libyuv,dilagurung/libyuv,hajunho/libyuv,skufog/libyuv,syoshimu/libyuv,ganzhijie/libyuv,uditkumawat/libyuv,uditkumawat/libyuv,fate-extra/libyuv,wl-chuang/libyuv,bingerZhang/libyuv,wl-chuang/libyuv,alfahim/libyuv,chucvv/libyuv,RockySteveJobs/libyuv,skufog/libyuv,Vairn/libyuv,WangYongHai/libyuv,OrenHg/libyuv,fate-extra/libyuv,VladDrake/libyuv,dilagurung/libyuv