arm64: zynqmp: Align gpio-key node names with dtschema

The node names should be generic and DT schema expects certain pattern
(e.g. with key/button/switch).
It is based on kernel commit (228e8a88b1915a2b467c83d8d0976605f1272fae).

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/ae23999097553acb21dfca9288a913bb8b24587a.1670590595.git.michal.simek@amd.com
diff --git a/arch/arm/dts/zynqmp-sm-k26-revA.dts b/arch/arm/dts/zynqmp-sm-k26-revA.dts
index bae24aa..aafaaec 100644
--- a/arch/arm/dts/zynqmp-sm-k26-revA.dts
+++ b/arch/arm/dts/zynqmp-sm-k26-revA.dts
@@ -53,7 +53,7 @@
 	gpio-keys {
 		compatible = "gpio-keys";
 		autorepeat;
-		fwuen {
+		key-fwuen {
 			label = "fwuen";
 			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
 			linux,code = <BTN_MISC>;