EXYNOS5: FDT: Add compatible strings for Serial

Add required compatible information for s5p serial driver

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/fdtdec.h b/include/fdtdec.h
index bc3b89b..bea326e 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -90,6 +90,7 @@
 	COMPAT_SAMSUNG_EXYNOS_FIMD,	/* Exynos Display controller */
 	COMPAT_SAMSUNG_EXYNOS5_DP,	/* Exynos Display port controller */
 	COMPAT_SAMSUNG_EXYNOS5_DWMMC,	/* Exynos5 DWMMC controller */
+	COMPAT_SAMSUNG_EXYNOS_SERIAL,	/* Exynos UART */
 	COMPAT_MAXIM_MAX77686_PMIC,	/* MAX77686 PMIC */
 	COMPAT_GENERIC_SPI_FLASH,	/* Generic SPI Flash chip */
 	COMPAT_MAXIM_98095_CODEC,	/* MAX98095 Codec */