Since we got rid of platform data, the driver may use
GPIO descriptor directly.

This change fixes a potential issue of double freeing GPIOs in ACPI
case by converting to devm_gpiod_get().
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>