platform/x86: pcengines-apuv2: use KEY_RESTART for front button

The keycode KEY_RESTART is more appropriate for the front button,
as most people use it for things like restart or factory reset.

Signed-off-by: Enrico Weigelt <info@metux.net>
Fixes: f8eb0235f6 ("x86: pcengines apuv2 gpio/leds/keys platform driver")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/platform/x86/pcengines-apuv2.c

@@ -93,7 +93,7 @@ static struct gpiod_lookup_table gpios_led_table = {
 
 static struct gpio_keys_button apu2_keys_buttons[] = {
 	{
-		.code			= KEY_SETUP,
+		.code			= KEY_RESTART,
 		.active_low		= 1,
 		.desc			= "front button",
 		.type			= EV_KEY,