EXYNOS5 : FDT: Add Aliases for SPI device

This patch adds aliases for SPI.
Signed-off-by: NRajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: NSimon Glass <sjg@chromium.org>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

board/samsung/dts/exynos5250-smdk5250.dts

@@ -25,6 +25,11 @@
 		i2c5 = "/i2c@12cb0000";
 		i2c6 = "/i2c@12cc0000";
 		i2c7 = "/i2c@12cd0000";
+		spi0 = "/spi@12d20000";
+		spi1 = "/spi@12d30000";
+		spi2 = "/spi@12d40000";
+		spi3 = "/spi@131a0000";
+		spi4 = "/spi@131b0000";
 	};
 
 	sromc@12250000 {