arm64: dts: db820c: add support to LS-I2C1

This patch adds support to LS_I2C1 on LS expansion connector.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi

@@ -18,6 +18,7 @@ aliases {
 		serial0 = &blsp2_uart1;
 		serial1 = &blsp2_uart2;
 		i2c0	= &blsp1_i2c2;
+		i2c1	= &blsp2_i2c1;
 	};
 
 	chosen {
@@ -47,5 +48,10 @@ i2c@07577000 {
 			status = "okay";
 		};
 
+		i2c@075b6000 {
+		/* On Low speed expansion */
+			label = "LS-I2C1";
+			status = "okay";
+		};
 	};
 };