gpio: merrifield: Don't use GPIOF_DIR_IN / GPIOF_DIR_OUT

The mentioned flags are dedicated solely for consumer API.
Replace them by explicit values.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[Made a !bang clamp to (0,1) instead of infix ? operator]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-merrifield.c

@@ -166,7 +166,7 @@ static int mrfld_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
 {
 	void __iomem *gpdr = gpio_reg(chip, offset, GPDR);
 
-	return (readl(gpdr) & BIT(offset % 32)) ? GPIOF_DIR_OUT : GPIOF_DIR_IN;
+	return !(readl(gpdr) & BIT(offset % 32));
 }
 
 static int mrfld_gpio_set_debounce(struct gpio_chip *chip, unsigned int offset,