ARM: dts: AM437X-GP-EVM: AM437X-SK-EVM: Make dcdc3 dcdc5 and dcdc6 enable during suspend

dcdc3, dcdc5, dcdc6 supply ddr and rtc respectively. These
are required to be on during suspend. Hence set the state accordingly.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 128dbef..94122de 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -537,7 +537,11 @@
 			regulator-max-microvolt = <1500000>;
 			regulator-boot-on;
 			regulator-always-on;
+			regulator-state-mem {
+				regulator-on-in-suspend;
+			};
 		};
+
 		dcdc5: regulator-dcdc5 {
 			compatible = "ti,tps65218-dcdc5";
 			regulator-name = "v1_0bat";
@@ -545,6 +549,9 @@
 			regulator-max-microvolt = <1000000>;
 			regulator-boot-on;
 			regulator-always-on;
+			regulator-state-mem {
+				regulator-on-in-suspend;
+			};
 		};
 
 		dcdc6: regulator-dcdc6 {
@@ -554,6 +561,9 @@
 			regulator-max-microvolt = <1800000>;
 			regulator-boot-on;
 			regulator-always-on;
+			regulator-state-mem {
+				regulator-on-in-suspend;
+			};
 		};
 
 		ldo1: regulator-ldo1 {