[PATCH v4 3/4] clk: Hi6220: add stub clock driver

[Stephen Boyd]

On 08/04, Leo Yan wrote:
> On Hi6220, there have some clocks which can use mailbox channel to send
> messages to power controller to change frequency; this includes CPU, GPU
> and DDR clocks.
> 
> For dynamic frequency scaling, firstly need write the frequency value to
> SRAM region, and then send message to mailbox to trigger power controller
> to handle this requirement. This driver will use syscon APIs to pass SRAM
> memory region and use common mailbox APIs for channels accessing.
> 
> This init driver will support cpu frequency change firstly.
> 
> Signed-off-by: Leo Yan <leo.yan at linaro.org>
> ---

Applied to clk-next

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