ar71xx: WNDR4300: use standard labels for buttons

GPIO key labels have been changed to standard ones (rfkill, reset, wps).
It does not affect button functionality.

Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>

target/linux/ar71xx/files/arch/mips/ath79/mach-wndr4300.c

@@ -107,7 +107,7 @@ static struct gpio_led wndr4300_leds_gpio[] __initdata = {
 
 static struct gpio_keys_button wndr4300_gpio_keys[] __initdata = {
 	{
-		.desc		= "Reset button",
+		.desc		= "reset",
 		.type		= EV_KEY,
 		.code		= KEY_RESTART,
 		.debounce_interval = WNDR4300_KEYS_DEBOUNCE_INTERVAL,
@@ -115,7 +115,7 @@ static struct gpio_keys_button wndr4300_gpio_keys[] __initdata = {
 		.active_low	= 1,
 	},
 	{
-		.desc		= "WPS button",
+		.desc		= "wps",
 		.type		= EV_KEY,
 		.code		= KEY_WPS_BUTTON,
 		.debounce_interval = WNDR4300_KEYS_DEBOUNCE_INTERVAL,
@@ -123,7 +123,7 @@ static struct gpio_keys_button wndr4300_gpio_keys[] __initdata = {
 		.active_low	= 1,
 	},
 	{
-		.desc		= "Wireless button",
+		.desc		= "rfkill",
 		.type		= EV_KEY,
 		.code		= KEY_RFKILL,
 		.debounce_interval = WNDR4300_KEYS_DEBOUNCE_INTERVAL,