switch toyuy2 from aligned to unaligned
BUG=211
TESTED=ToYUY2*
Review URL: https://webrtc-codereview.appspot.com/1274005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@633 16f28f9a-4ce2-e073-06de-1de4eb20be90
6 files changed