Add clock control for PCIe controller on UniPhier SoCs. This adds
support for Pro5, LD20 and PXs3.
Signed-off-by: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>