ARM: dts: orion5x: add buffalo linkstation ls-wtgl

Add dts file to support Buffalo Linkstation LS-WTGL,
which is marvell orion5x based 2-bay 3.5" HDD NAS.
Product info:
 - (JPN) http://buffalo.jp/products/catalog/storage/ls-wtgl_r1/
 - (ENG) http://www.buffalotech.com/support-and-downloads/download/LinkStation_Pro_Duo_Manual_web.pdf

Signed-off-by: Roger Shimizu <rogershimizu@gmail.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 0f354f5..8e12ec5 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -466,6 +466,7 @@
 dtb-$(CONFIG_ARCH_ORION5X) += \
 	orion5x-lacie-d2-network.dtb \
 	orion5x-lacie-ethernet-disk-mini-v2.dtb \
+	orion5x-linkstation-lswtgl.dtb \
 	orion5x-maxtor-shared-storage-2.dtb \
 	orion5x-rd88f5182-nas.dtb
 dtb-$(CONFIG_ARCH_PRIMA2) += \