sched: Fix fix_small_capacity

The CPU power test is the wrong way around in fix_small_capacity.

This was due to a small changes made in the posted patch on lkml to what
was was taken upstream.

This patch fixes asymmetric packing for POWER7.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <12629.1276124617@neuling.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>