pinctrl/abx500: use the BIT() macro where appropriate

The BIT() macro provides a simple and easy to read way of
obtaining bit offsets into things like masks and hardware
registers. In this patch we're simply replacing all
instances of '1 << x' with 'bit(x)'.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-abx500.c

@@ -157,7 +157,7 @@ static int abx500_gpio_set_bits(struct gpio_chip *chip, u8 reg,
 
 	reg += offset / 8;
 	ret = abx500_mask_and_set_register_interruptible(pct->dev,
-				AB8500_MISC, reg, 1 << pos, val << pos);
+				AB8500_MISC, reg, BIT(pos), val << pos);
 	if (ret < 0)
 		dev_err(pct->dev, "%s write failed\n", __func__);
 	return ret;