exynos: enable big endian support

Previous patches fixed endian neutral issues in Arndale BSP, so mark it as one
that supports big endian

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 542c31b..8cfaada 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -31,6 +31,7 @@
 
 config ARCH_EXYNOS5
 	bool "SAMSUNG EXYNOS5"
+	select ARCH_SUPPORTS_BIG_ENDIAN
 	select ARM_AMBA
 	select CLKSRC_OF
 	select HAVE_ARM_SCU if SMP