mfd: Use gpio_request_one from dm355evm_msp

Use gpio_request_one() instead of multiple gpiolib calls.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/dm355evm_msp.c

@@ -308,8 +308,7 @@ static int add_children(struct i2c_client *client)
 	for (i = 0; i < ARRAY_SIZE(config_inputs); i++) {
 		int gpio = dm355evm_msp_gpio.base + config_inputs[i].offset;
 
-		gpio_request(gpio, config_inputs[i].label);
-		gpio_direction_input(gpio);
+		gpio_request_one(gpio, GPIOF_IN, config_inputs[i].label);
 
 		/* make it easy for userspace to see these */
 		gpio_export(gpio, false);