Add basic support for UniPhier NX1 SoC as non-legacy SoC. This includes
a compatible string, SoC-dependent data containing init() and wait()
functions for the controller.

Link: https://lore.kernel.org/r/1644480596-20037-4-git-send-email-hayashi.kunihiko@socionext.comSigned-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: NRob Herring <robh@kernel.org>