Revert "optimize for armv7-a"

This reverts commit 3256c6448c7cdb79eac08e4e8a6c1c9eae221b1c.
4.8 build scripts:  update to use all new things :)
Signed-off-by: Paul Beeler <sparksco@gmail.com>

Change-Id: I4ebd9c43aa9b0b453430c3de2e2fb6238aaff983