This driver adds functionality to the tps65911 chip driver. Two of the comparators are configurable by software and measures VCCS voltage to detect high or low voltage scenarios. Signed-off-by: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>