pinctrl: nomadik: fix inversion of gpio direction

The input/output directions were inversed on the GPIO direction
read function. Loose a ! and it is correct.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/nomadik/pinctrl-nomadik.c

@@ -854,7 +854,7 @@ static int nmk_gpio_get_dir(struct gpio_chip *chip, unsigned offset)
 
 	clk_enable(nmk_chip->clk);
 
-	dir = !!(readl(nmk_chip->addr + NMK_GPIO_DIR) & BIT(offset));
+	dir = !(readl(nmk_chip->addr + NMK_GPIO_DIR) & BIT(offset));
 
 	clk_disable(nmk_chip->clk);