ARM: dts: add missing ux500 device trees

This adds hrefprev60, hrefv60plus and ccu9540 to device trees compiled
during build.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>

arch/arm/boot/dts/Makefile

@@ -74,7 +74,10 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
 	am335x-evm.dtb \
 	am335x-bone.dtb
 dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb
-dtb-$(CONFIG_ARCH_U8500) += snowball.dtb
+dtb-$(CONFIG_ARCH_U8500) += snowball.dtb \
+	hrefprev60.dtb \
+	hrefv60plus.dtb \
+	ccu9540.dtb
 dtb-$(CONFIG_ARCH_SHMOBILE) += emev2-kzm9d.dtb \
 	r8a7740-armadillo800eva.dtb \
 	sh73a0-kzm9g.dtb