dt-bindings: clock: qcom: Add QCOM Q6SSTOP clock controller bindings

Add devicetree binding for the Q6SSTOP clock controller found in QCS404.

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Link: https://lkml.kernel.org/r/20191011132928.9388-2-govinds@codeaurora.org


Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>