sh: shx3: Fix last GPIO index

A careless look at the code shows that the last entry in the
pinmux_gpios seems to be GPIO_FN_IRQOUT. However, entries are ordered by
the GPIO number, as the PINMUX_GPIO macro is expended to an indexed
array initializer. The last entry in the array is thus GPIO_FN_STATUS0.
Set the pinmux_info last_gpio field accordingly.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/sh/kernel/cpu/sh4a/pinmux-shx3.c

@@ -572,7 +572,7 @@ static struct pinmux_info shx3_pinmux_info = {
 	.mark		= { PINMUX_MARK_BEGIN,     PINMUX_MARK_END },
 	.function	= { PINMUX_FUNCTION_BEGIN, PINMUX_FUNCTION_END },
 	.first_gpio	= GPIO_PA7,
-	.last_gpio	= GPIO_FN_IRQOUT,
+	.last_gpio	= GPIO_FN_STATUS0,
 	.gpios		= shx3_pinmux_gpios,
 	.gpio_data	= shx3_pinmux_data,
 	.gpio_data_size	= ARRAY_SIZE(shx3_pinmux_data),