pinctrl: Fix spelling typos

Just fix spelling typos in comments.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 0bf6392f..37be238 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -1062,7 +1062,7 @@ static struct pinctrl *create_pinctrl(struct device *dev,
 	mutex_unlock(&pinctrl_maps_mutex);
 
 	if (ret < 0) {
-		/* If some other error than deferral occured, return here */
+		/* If some other error than deferral occurred, return here */
 		pinctrl_free(p, false);
 		return ERR_PTR(ret);
 	}