Fixes: http://bugs.elinux.org/issues/127

the bb.org community was seeing random reboots before this change.
Signed-off-by: NRobert Nelson <robertcnelson@gmail.com>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>