arm: kirkwood: add support for Synology DS109 board

Synology DS109 is based on MV88F6281. The code
is based on Dreamplug code with modificatons
from Synologys open source repository.

Signed-off-by: Walter Schweizer <swwa@users.sourceforge.net>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index 9205b1e..9c24921 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -10,6 +10,9 @@
 config TARGET_DREAMPLUG
 	bool "DreamPlug Board"
 
+config TARGET_DS109
+	bool "Synology DS109"
+
 config TARGET_GURUPLUG
 	bool "GuruPlug Board"
 
@@ -59,6 +62,7 @@
 
 source "board/Marvell/openrd/Kconfig"
 source "board/Marvell/dreamplug/Kconfig"
+source "board/Synology/ds109/Kconfig"
 source "board/Marvell/guruplug/Kconfig"
 source "board/Marvell/sheevaplug/Kconfig"
 source "board/buffalo/lsxl/Kconfig"