ARM: dts: db600c: add spi support

This patch adds spi nodes required to provide spi bus support on LS
expansion.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts

@@ -13,6 +13,7 @@ aliases {
 		i2c1 = &gsbi3_i2c;
 		i2c2 = &gsbi4_i2c;
 		i2c3 = &gsbi7_i2c;
+		spi0 = &gsbi5_spi;
 	};
 
 	regulators {
@@ -181,6 +182,15 @@ i2c@16380000 {
 			};
 		};
 
+		gsbi@1a200000 {
+			status = "okay";
+			spi@1a280000 {
+				/* On Low speed expansion */
+				label = "LS-SPI0";
+				status = "okay";
+			};
+		};
+
 		/* DEBUG UART  */
 		gsbi@16600000 {
 			status = "okay";