dt-bindings: clock: Introduce Qualcomm Turing Clock controller

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

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>