can: mcp251x: Fix up includes

This driver is including the legacy GPIO header <linux/gpio.h>
but the only thing it is using from that header is the wrong
define for GPIOF_DIR_OUT.

Fix it up by using GPIO_LINE_DIRECTION_* macros respectively.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20240412173332.186685-1-andriy.shevchenko@linux.intel.comSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/spi/mcp251x.c

@@ -28,7 +28,6 @@
 #include <linux/device.h>
 #include <linux/ethtool.h>
 #include <linux/freezer.h>
-#include <linux/gpio.h>
 #include <linux/gpio/driver.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
@@ -482,9 +481,9 @@ static int mcp251x_gpio_get_direction(struct gpio_chip *chip,
 				      unsigned int offset)
 {
 	if (mcp251x_gpio_is_input(offset))
-		return GPIOF_DIR_IN;
+		return GPIO_LINE_DIRECTION_IN;
 
-	return GPIOF_DIR_OUT;
+	return GPIO_LINE_DIRECTION_OUT;
 }
 
 static int mcp251x_gpio_get(struct gpio_chip *chip, unsigned int offset)