pinctrl: bcm/cygnys/iproc: fixup rebase issue

Somehow this variable name screwed up in some rebase, fixed it.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Pramod Kumar <pramodku@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/bcm/pinctrl-iproc-gpio.c

@@ -637,7 +637,7 @@ static int iproc_gpio_register_pinconf(struct iproc_gpio *chip)
 	return 0;
 }
 
-static void iproc_gpio_unregister_pinconf(struct cygnus_gpio *chip)
+static void iproc_gpio_unregister_pinconf(struct iproc_gpio *chip)
 {
 	pinctrl_unregister(chip->pctl);
 }