sched: set sched_mc_power_savings to 2
this tries to gather tasks together in one package, reducing load and waking up of cpu1

Change-Id: I698ba9c382840d4f749438b5096bbef82a602fff
ksm: increase slacking

Change-Id: I0f02051ce277150a7e1b7adca324b4cb6b0f44ac
defconfig: disable all samsung debugging traces

Change-Id: I2cc34ca4ec90e4fdff97441efb3fb125b1adc15d
mach-ux500: fix ups for previous commit

Change-Id: I441bffaed83c71af59765020ef4d5abc1d30ce41