Revert "ARM: kconfig: select HAVE_EFFICIENT_UNALIGNED_ACCESS for CPUv6+ && MMU"
Kernel didn't boot with this.

This reverts commit a614a786e4c4d8fca7b1ca23205d3797aed6e6c5.
Revert "update config for efficient unaligned access"
Kernel didn't boot with this.

This reverts commit 5ab4af2b668ecafa89398321060d9ea13bd28985.
Fix build