gpio: elkhartlake: reuse pm_ops from Intel Tangier driver

Reuse tng_gpio_pm_ops from Intel Tangier driver instead of calling
them through a local copy.

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Link: https://lore.kernel.org/r/20231113131600.10828-3-raag.jadav@intel.com


Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>