Revert "Merge tag 'hix5hd2-dt-for-3.18' of git://github.com/hisilicon/linux-hisi into next/dt"

Apparently most of the newly added nodes had the same problem,
so instead of reverting the individual patches, this undoes
the effect of the merge and backs out all of them at once.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>