gpio: blzp1600: remove incorrect pf_match_ptr()

gpio: blzp1600: remove incorrect pf_match_ptr()

The blzp1600_gpio_of_match is defined unconditionally and can always be referenced
by the driver, so don't use of_match_ptr() and avoid this warning:

drivers/gpio/gpio-blzp1600.c:263:34: error: 'blzp1600_gpio_of_match' defined but not used [-Werror=unused-const-variable=]
  263 | static const struct of_device_id blzp1600_gpio_of_match[] = {

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250502203721.2117186-1-arnd@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>