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Add an helper to setup the force clock control as it will
be used in multiple HW files.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/562323/

Signed-off-by: Rob Clark <robdclark@chromium.org>