Revert "Add linaro + O3 building"

This reverts commit e8b17c2ee4c4d39ca3793f36f2be6ebb9f4d0bec.
Revert "arm: Allow CPU-supported unaligned accesses"

This reverts commit 08820922d67fe775293c1156005e6b99035b9101.

Conflicts:

	Makefile

Change-Id: I095cdb47c6dac7a06bca949880ed6919b26474b8