ath79: change WPS to Wifi button on TL-WPA8630P v2

Both TL-WPA8630(P) v1 and v2 feature a button labelled "WiFi".
While this is implemented as KEY_RFKILL for v1 in ar71xx and ath79,
the v2 sets it up as WPS button.

According to the manual, the behavior in OEM firmware is:
"Press and hold the button for 1 second to copy wireless settings
from the main router to the extender. Go to Wi-Fi Clone for more
information. Press and hold the button for at least 5 seconds to
turn the wireless function on or off."

Consequently, and since this is historic behavior on v1 in OpenWrt,
we set this button to KEY_RFKILL on both revisions.

Fixes: ab74def0db ("ath79: add support for TP-Link TL-WPA8630P v2")

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ath79/dts/qca9563_tplink_tl-wpa8630-v1.dts

@@ -12,15 +12,6 @@
 	};
 };
 
-&keys {
-	wifi {
-		label = "WiFi button";
-		linux,code = <KEY_RFKILL>;
-		gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
-		debounce-interval = <60>;
-	};
-};
-
 &partitions {
 	uboot: partition@0 {
 		label = "u-boot";

target/linux/ath79/dts/qca9563_tplink_tl-wpa8630.dtsi

@@ -13,7 +13,7 @@
 		led-upgrade = &led_power;
 	};
 
-	keys: keys {
+	keys {
 		compatible = "gpio-keys";
 
 		reset {
@@ -36,6 +36,13 @@
 			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
 			debounce-interval = <60>;
 		};
+
+		wifi {
+			label = "WiFi button";
+			linux,code = <KEY_RFKILL>;
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
 	};
 
 	leds {

target/linux/ath79/dts/qca9563_tplink_tl-wpa8630p-v2.dtsi

@@ -17,15 +17,6 @@
 	};
 };
 
-&keys {
-	wps {
-		label = "WPS button";
-		linux,code = <KEY_WPS_BUTTON>;
-		gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
-		debounce-interval = <60>;
-	};
-};
-
 &partitions {
 	partition@0 {
 		label = "factory-uboot";