ARM: dts: at91: sama5d2: remove atmel,wakeup-type references

atmel,wakeup-type DT property is not referenced anywhere in the current
and previous version of the code thus remove it.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nferre@kernel.org>
Link: https://lore.kernel.org/r/1609845525-10766-1-git-send-email-claudiu.beznea@microchip.com

arch/arm/boot/dts/at91-kizbox3_common.dtsi

@@ -341,7 +341,6 @@ &shutdown_controller {
 
 	input@0 {
 		reg = <0>;
-		atmel,wakeup-type = "low";
 	};
 };
 

arch/arm/boot/dts/at91-sama5d27_som1_ek.dts

@@ -142,7 +142,6 @@ shdwc@f8048010 {
 
 				input@0 {
 					reg = <0>;
-					atmel,wakeup-type = "low";
 				};
 			};
 

arch/arm/boot/dts/at91-sama5d27_wlsom1_ek.dts

@@ -209,7 +209,6 @@ &shutdown_controller {
 
 	input@0 {
 		reg = <0>;
-		atmel,wakeup-type = "low";
 	};
 };
 

arch/arm/boot/dts/at91-sama5d2_icp.dts

@@ -697,7 +697,6 @@ &shutdown_controller {
 
 	input@0 {
 		reg = <0>;
-		atmel,wakeup-type = "low";
 	};
 };
 

arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts

@@ -206,7 +206,6 @@ shdwc@f8048010 {
 
 				input@0 {
 					reg = <0>;
-					atmel,wakeup-type = "low";
 				};
 			};
 

arch/arm/boot/dts/at91-sama5d2_xplained.dts

@@ -351,7 +351,6 @@ shdwc@f8048010 {
 
 				input@0 {
 					reg = <0>;
-					atmel,wakeup-type = "low";
 				};
 			};