ARM: ux500: split HREF UIB files

Create two different UIB (User Interface Board) include files: one per
UIB simply. The include files now only handle the devices on that
very UIB.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/boot/dts/ste-stuib.dtsi b/arch/arm/boot/dts/ste-href-stuib.dtsi
similarity index 100%
rename from arch/arm/boot/dts/ste-stuib.dtsi
rename to arch/arm/boot/dts/ste-href-stuib.dtsi

diff --cc arch/arm/boot/dts/ste-href-tvk1281618.dtsi
Simple merge

diff --cc arch/arm/boot/dts/ste-hrefprev60.dts
Simple merge

diff --cc arch/arm/boot/dts/ste-hrefv60plus.dts
Simple merge