pinctrl: Fix spelling problem

The grammar is off. This fixes it.

Fixes: 6e4f3db8dfcf ("pinctrl: just return if no valid maps")
Signed-off-by: Linus Walleij <linusw@kernel.org>

drivers/pinctrl/devicetree.c

diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c
index 0b7f74b..5b3904d 100644
--- a/drivers/pinctrl/devicetree.c
+++ b/drivers/pinctrl/devicetree.c
@@ -175,7 +175,7 @@ static int dt_to_map_one_config(struct pinctrl *p,
 		 * return.
 		 */
 		dev_info(p->dev,
-			 "there is not valid maps for state %s\n", statename);
+			 "there are no valid maps for state %s\n", statename);
 		return 0;
 	}