Allow manual control over online CPUS

Signed-off-by: David Savage <bedalus@gmail.com>

Conflicts:
	arch/arm/mach-tegra/cpu-tegra3.c
switch to BFQ v6

Signed-off-by: David Savage <bedalus@gmail.com>
SLUB: a few choice updates

Signed-off-by: David Savage <bedalus@gmail.com>
block: BFQ update to v6r1

Signed-off-by: David Savage <bedalus@gmail.com>