pinctrl-bcm2835: Set base to 0 give expected gpio numbering

raspberrypi inclusion
category: feature
bugzilla: 50432

--------------------------------
Signed-off-by: NNoralf Tronnes <notro@tronnes.org>
Signed-off-by: NFang Yafen <yafen@iscas.ac.cn>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/pinctrl/bcm/pinctrl-bcm2835.c

@@ -362,7 +362,7 @@ static const struct gpio_chip bcm2835_gpio_chip = {
 	.get = bcm2835_gpio_get,
 	.set = bcm2835_gpio_set,
 	.set_config = gpiochip_generic_config,
-	.base = -1,
+	.base = 0,
 	.ngpio = BCM2835_NUM_GPIOS,
 	.can_sleep = false,
 };