arm: at91: taurus/axm: add DM and DTS support

add DM and DTS support for the at91 based siemens
boards.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
[rebased on current ToT]
Signed-off-by: Andreas Bießmann <andreas@biessmann.org>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 63b86f1..5d463ce 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -3,6 +3,7 @@
 #
 
 dtb-$(CONFIG_AT91FAMILY) += at91sam9260-smartweb.dtb \
+	at91sam9g20-taurus.dtb \
 	at91sam9g45-corvus.dtb \
 	at91sam9g45-gurnard.dtb