arm: zynq: Add SCL & SDA GPIO entries for recovery

Wire i2c pinmuxing gpio recovery for zc702.
Signed-off-by: NChirag Parekh <chiragp@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynq-zc702.dts

@@ -107,8 +107,11 @@
 &i2c0 {
 	status = "okay";
 	clock-frequency = <400000>;
-	pinctrl-names = "default";
+	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&pinctrl_i2c0_default>;
+	pinctrl-1 = <&pinctrl_i2c0_gpio>;
+	scl-gpios = <&gpio0 50 0>;
+	sda-gpios = <&gpio0 51 0>;
 
 	i2cswitch@74 {
 		compatible = "nxp,pca9548";
@@ -299,6 +302,19 @@
 		};
 	};
 
+	pinctrl_i2c0_gpio: i2c0-gpio {
+		mux {
+			groups = "gpio0_50_grp", "gpio0_51_grp";
+			function = "gpio0";
+		};
+
+		conf {
+			groups = "gpio0_50_grp", "gpio0_51_grp";
+			slew-rate = <0>;
+			io-standard = <1>;
+		};
+	};
+
 	pinctrl_sdhci0_default: sdhci0-default {
 		mux {
 			groups = "sdio0_2_grp";