arm64: dts: renesas: beacon: Better describe keys

The keys on the baseboard are laid out in an diamond pattern, up, down,
left, right and center.  Update the descriptions to make it easier to
read.
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20201224170502.2254683-4-aford173@gmail.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi

@@ -40,38 +40,38 @@ hdmi0_con: endpoint {
 	keys {
 		compatible = "gpio-keys";
 
-		key-1 {
+		key-1 { /* S19 */
 			gpios = <&gpio4 6 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_1>;
-			label = "Switch-1";
+			linux,code = <KEY_UP>;
+			label = "Up";
 			wakeup-source;
 			debounce-interval = <20>;
 		};
-		key-2 {
+		key-2 { /*S20 */
 			gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_2>;
-			label = "Switch-2";
+			linux,code = <KEY_LEFT>;
+			label = "Left";
 			wakeup-source;
 			debounce-interval = <20>;
 		};
-		key-3 {
+		key-3 { /* S21 */
 			gpios = <&gpio5 17 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_3>;
-			label = "Switch-3";
+			linux,code = <KEY_DOWN>;
+			label = "Down";
 			wakeup-source;
 			debounce-interval = <20>;
 		};
-		key-4 {
+		key-4 { /* S22 */
 			gpios = <&gpio5 20 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_4>;
-			label = "Switch-4";
+			linux,code = <KEY_RIGHT>;
+			label = "Right";
 			wakeup-source;
 			debounce-interval = <20>;
 		};
-		key-5 {
+		key-5 { /* S23 */
 			gpios = <&gpio5 22 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_5>;
-			label = "Switch-4";
+			linux,code = <KEY_ENTER>;
+			label = "Center";
 			wakeup-source;
 			debounce-interval = <20>;
 		};