Since TWL GPIO's can go into sleep, and using normal
gpio_get/set_value() API will lead to kernel dump (WARN_ON()).
So replacing standard gpio_get/set_value() to
gpio_get/set_value_cansleep().
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Reviewed-by: Charulatha V <charu@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>