pinctrl: bcm2835: declare pin config as generic

Since commit 0de704955e ("pinctrl: bcm2835: Add support for
generic pinctrl binding") this driver is capable to use the generic
interface. So declare this accordingly.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/bcm/pinctrl-bcm2835.c

@@ -969,6 +969,7 @@ static int bcm2835_pinconf_set(struct pinctrl_dev *pctldev,
 }
 
 static const struct pinconf_ops bcm2835_pinconf_ops = {
+	.is_generic = true,
 	.pin_config_get = bcm2835_pinconf_get,
 	.pin_config_set = bcm2835_pinconf_set,
 };