ARM: dts: add dts file for exynos5260-xyref5260 board

The patch adds the dts file for xyref5260 board which
is based on exynos5260 SoC.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 3220e29..f563a82 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -73,6 +73,7 @@
 	exynos5250-arndale.dtb \
 	exynos5250-smdk5250.dtb \
 	exynos5250-snow.dtb \
+	exynos5260-xyref5260.dtb \
 	exynos5420-arndale-octa.dtb \
 	exynos5420-peach-pit.dtb \
 	exynos5420-smdk5420.dtb \