[PATCH/RFC 1/5] clk: shmobile: rcar-gen2: Add CPG Clock Domain support

[Kevin Hilman]

Geert Uytterhoeven <geert+renesas at glider.be> writes:

> Add Clock Domain support to the R-Car Gen2 Clock Pulse Generator (CPG)
> driver using the generic PM Domain.  This allows to power-manage the
> module clocks of SoC devices that are part of the CPG Clock Domain using
> Runtime PM, or for system suspend/resume.
>
> SoC devices that are part of the CPG Clock Domain and can be
> power-managed through their primary clock should be tagged in DT with a
> proper "power-domains" property.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>

Reviewed-by: Kevin Hilman <khilman at linaro.org>