pinctrl: samsung: choose GPIO numberspace base dynamically

Selecting it statically is deprecated and results in a warning while
booting the system:

gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.

Signed-off-by: Mateusz Majewski <m.majewski2@samsung.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Tested-by: Sam Protsenko <semen.protsenko@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20231006125557.212681-4-m.majewski2@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Author: metiulekm

drivers/pinctrl/samsung/pinctrl-samsung.c

@@ -968,7 +968,7 @@ static int samsung_gpiolib_register(struct platform_device *pdev,
 		bank->gpio_chip = samsung_gpiolib_chip;
 
 		gc = &bank->gpio_chip;
-		gc->base = drvdata->pin_base + bank->pin_base;
+		gc->base = -1; /* Dynamic allocation */
 		gc->ngpio = bank->nr_pins;
 		gc->parent = &pdev->dev;
 		gc->fwnode = bank->fwnode;