pinctrl: sunplus: sppctl: Remove duplicate assignment of of_gpio_n_cells

The of_gpio_n_cells default is 2 when ->of_xlate() callback is
not defined. No need to assign it explicitly in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230112185122.45216-1-andriy.shevchenko@linux.intel.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/sunplus/sppctl.c

@@ -556,7 +556,6 @@ static int sppctl_gpio_new(struct platform_device *pdev, struct sppctl_pdata *pc
 	gchip->base             = -1;
 	gchip->ngpio            = sppctl_gpio_list_sz;
 	gchip->names            = sppctl_gpio_list_s;
-	gchip->of_gpio_n_cells  = 2;
 
 	pctl->pctl_grange.npins = gchip->ngpio;
 	pctl->pctl_grange.name  = gchip->label;