ARM: dts: rockchip: fix pinctrl sleep nodename for rk3036-kylin and rk3288

A test with the command below aimed at powerpc generates
notifications in the Rockchip ARM tree.

Fix pinctrl "sleep" nodename by renaming it to "suspend"
for rk3036-kylin and rk3288

make ARCH=arm dtbs_check
DT_SCHEMA_FILES=Documentation/devicetree/bindings/powerpc/sleep.yaml
Signed-off-by: NJohan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210126110221.10815-1-jbx6244@gmail.comSigned-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3036-kylin.dts

@@ -390,7 +390,7 @@
 		};
 	};
 
-	sleep {
+	suspend {
 		global_pwroff: global-pwroff {
 			rockchip,pins = <2 RK_PA7 1 &pcfg_pull_none>;
 		};

arch/arm/boot/dts/rk3288.dtsi

@@ -1582,7 +1582,7 @@
 			drive-strength = <12>;
 		};
 
-		sleep {
+		suspend {
 			global_pwroff: global-pwroff {
 				rockchip,pins = <0 RK_PA0 1 &pcfg_pull_none>;
 			};