ARM: dts: Prepare spring (WIP)

HP Chromebook 11

Signed-off-by: Andreas Färber <afaerber@suse.de>
spring build fix

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
ARM: dts: exynos5250: Simplify node for spring

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
ARM: dts: exynos5250: Add more spring nodes

Signed-off-by: Andreas Färber <andreas.faerber@web.de>