ARM: zynq: Replace 'io-standard' with 'power-source' property

Replace 'io-standard' property with 'power-source' property in all
zynq dts files to be in sync with Zynq Pinctrl driver.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynq-zc706.dts b/arch/arm/dts/zynq-zc706.dts
index 84729e9..87308c0 100644
--- a/arch/arm/dts/zynq-zc706.dts
+++ b/arch/arm/dts/zynq-zc706.dts
@@ -151,7 +151,7 @@
 		conf {
 			groups = "ethernet0_0_grp";
 			slew-rate = <0>;
-			io-standard = <4>;
+			power-source = <4>;
 		};
 
 		conf-rx {
@@ -174,7 +174,7 @@
 		conf-mdio {
 			groups = "mdio0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 			bias-disable;
 		};
 	};
@@ -188,7 +188,7 @@
 		conf {
 			groups = "gpio0_7_grp", "gpio0_46_grp", "gpio0_47_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-pull-up {
@@ -212,7 +212,7 @@
 			groups = "i2c0_10_grp";
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 	};
 
@@ -225,7 +225,7 @@
 		conf {
 			groups = "sdio0_2_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 			bias-disable;
 		};
 
@@ -239,7 +239,7 @@
 			bias-high-impedance;
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		mux-wp {
@@ -252,7 +252,7 @@
 			bias-high-impedance;
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 	};
 
@@ -265,7 +265,7 @@
 		conf {
 			groups = "uart1_10_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
@@ -288,7 +288,7 @@
 		conf {
 			groups = "usb0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {