pinctrl: pinctrl-single.c: Cleaning up wrong format string usage

%d in format string used, but the type is unsigned int

This was found using a static code analysis program called cppcheck
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-single.c

@@ -780,7 +780,7 @@ static int pcs_add_pin(struct pcs_device *pcs, unsigned offset,
 
 	pin = &pcs->pins.pa[i];
 	pn = &pcs->names[i];
-	sprintf(pn->name, "%lx.%d",
+	sprintf(pn->name, "%lx.%u",
 		(unsigned long)pcs->res->start + offset, pin_pos);
 	pin->name = pn->name;
 	pin->number = i;