add scalar stubs for neon functions to give arm guys a place to work

BUG=
R=djsollen@google.com, reed@google.com

Author: humper@google.com

Review URL: https://chromiumcodereview.appspot.com/20749003

git-svn-id: http://skia.googlecode.com/svn/trunk@10431 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed