gpiolib: legacy: Make sure we kill gpio_request_one() first

gpiolib: legacy: Make sure we kill gpio_request_one() first

Make sure we kill gpio_request_one() first by converting it to
use legacy APIs that will be alive a bit longer. In particular,
this also shows the code we will use in another function to make
it die independently.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20251112093608.1481030-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>