arm64: dts: rockchip: remove unneeded idle-states for rk3368

ATF and Linux support system suspend, so we don't need define
idle-states to support suspend. RK3368 don't support any
idle state other then WFI. Just remove it.

Change-Id: Ifa95862b4998287560cd2214ff6b5763a9d6ce02
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>

Author: rkhuangtao

arch/arm64/boot/dts/rockchip/rk3368.dtsi

@@ -112,23 +112,10 @@
 			};
 		};
 
-		idle-states {
-			entry-method = "psci";
-
-			cpu_sleep: cpu-sleep-0 {
-				compatible = "arm,idle-state";
-				arm,psci-suspend-param = <0x1010000>;
-				entry-latency-us = <0x3fffffff>;
-				exit-latency-us = <0x40000000>;
-				min-residency-us = <0xffffffff>;
-			};
-		};
-
 		cpu_l0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x0>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKL>;
 			operating-points-v2 = <&cluster0_opp>;
@@ -141,7 +128,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x1>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKL>;
 			operating-points-v2 = <&cluster0_opp>;
@@ -152,7 +138,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x2>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKL>;
 			operating-points-v2 = <&cluster0_opp>;
@@ -163,7 +148,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x3>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKL>;
 			operating-points-v2 = <&cluster0_opp>;
@@ -174,7 +158,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x100>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKB>;
 			operating-points-v2 = <&cluster1_opp>;
@@ -187,7 +170,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x101>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKB>;
 			operating-points-v2 = <&cluster1_opp>;
@@ -198,7 +180,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x102>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKB>;
 			operating-points-v2 = <&cluster1_opp>;
@@ -209,7 +190,6 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a53", "arm,armv8";
 			reg = <0x0 0x103>;
-			cpu-idle-states = <&cpu_sleep>;
 			enable-method = "psci";
 			clocks = <&cru ARMCLKB>;
 			operating-points-v2 = <&cluster1_opp>;