Though the keyboard driver for GPIO buttons(gpio-keys) will continue to
check for/support the legacy "gpio-key,wakeup" boolean property to
enable gpio buttons as wakeup source, "wakeup-source" is the new
standard binding.

This patch replaces the legacy "gpio-key,wakeup" with the unified
"wakeup-source" property in order to avoid any futher copy-paste
duplication.

Changelog text from a similar patch by Sudeep Holla.

Cc: Sudeep Holla <sudeep.ho...@arm.com>
Reported-by: Geert Uytterhoeven <geert+rene...@glider.be>
Signed-off-by: Simon Horman <horms+rene...@verge.net.au>
---
 arch/arm/boot/dts/r8a7793-gose.dts | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/arm/boot/dts/r8a7793-gose.dts 
b/arch/arm/boot/dts/r8a7793-gose.dts
index cfe142c2ba38..87e89ec9dd47 100644
--- a/arch/arm/boot/dts/r8a7793-gose.dts
+++ b/arch/arm/boot/dts/r8a7793-gose.dts
@@ -67,77 +67,77 @@
                        gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_1>;
                        label = "SW2-1";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-2 {
                        gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_2>;
                        label = "SW2-2";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-3 {
                        gpios = <&gpio5 2 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_3>;
                        label = "SW2-3";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-4 {
                        gpios = <&gpio5 3 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_4>;
                        label = "SW2-4";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-a {
                        gpios = <&gpio7 0 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_A>;
                        label = "SW30";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-b {
                        gpios = <&gpio7 1 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_B>;
                        label = "SW31";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-c {
                        gpios = <&gpio7 2 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_C>;
                        label = "SW32";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-d {
                        gpios = <&gpio7 3 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_D>;
                        label = "SW33";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-e {
                        gpios = <&gpio7 4 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_E>;
                        label = "SW34";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-f {
                        gpios = <&gpio7 5 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_F>;
                        label = "SW35";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
                key-g {
                        gpios = <&gpio7 6 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_G>;
                        label = "SW36";
-                       gpio-key,wakeup;
+                       wakeup-source;
                        debounce-interval = <20>;
                };
        };
-- 
2.7.0.rc3.207.g0ac5344

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