Revert "update"

This reverts commit d4f1398a47747b3daa5665d174a8ed95ca066b5d.
Revert "GPU BW tweak"

This reverts commit 2b9be81abe9c0e778855e1a96a9671659f97851c.
Revert "Usual stomping through the Makefiles"

This reverts commit 34af950ec6080a8feac39d7ae566a4bd1dc8ed6d.
Revert "optimize flags"

This reverts commit a08dadd9bddd84c3a301e291b4eee418084e3e90.
Usual stomping through the Makefiles

Conflicts:
	arch/arm/Makefile
update