imx: Return gpio_set_value in gpio_direction_output

Return gpio_set_value in gpio_direction_output.
Earlier it returned 0 and ignored gpio_set_value's return value.

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
Acked-by: Stefano Babic <sbabic@denx.de>

drivers/gpio/mxc_gpio.c

@@ -145,6 +145,5 @@ int gpio_direction_output(unsigned gpio, int value)
 	if (ret < 0)
 		return ret;
 
-	gpio_set_value(gpio, value);
-	return 0;
+	return gpio_set_value(gpio, value);
 }