ARM: ux500: use #include syntax to include *.dtsi.

This patch prepares the use of '#define' into dts files.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts
index 829a65f..c0a34a6 100644
--- a/arch/arm/boot/dts/snowball.dts
+++ b/arch/arm/boot/dts/snowball.dts
@@ -10,7 +10,7 @@
  */
 
 /dts-v1/;
-/include/ "dbx5x0.dtsi"
+#include "dbx5x0.dtsi"
 
 / {
 	model = "Calao Systems Snowball platform with device tree";