sh: boards/mach-x3proto: gpio: fix error handling code

Checks for (irq < 0) and (ilsel < 0) didn't make sense since they were
unsigned.  Made them signed.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/mach-x3proto/gpio.c

@@ -79,7 +79,7 @@ struct gpio_chip x3proto_gpio_chip = {
 
 int __init x3proto_gpio_setup(void)
 {
-	unsigned int ilsel;
+	int ilsel;
 	int ret, i;
 
 	ilsel = ilsel_enable(ILSEL_KEY);
@@ -92,7 +92,7 @@ int __init x3proto_gpio_setup(void)
 
 	for (i = 0; i < NR_BASEBOARD_GPIOS; i++) {
 		unsigned long flags;
-		unsigned int irq = create_irq();
+		int irq = create_irq();
 
 		if (unlikely(irq < 0)) {
 			ret = -EINVAL;