clk: qcom: Add DISPCC driver for SM8550

Add the Display Clock Controller controller based on
downstream and upstream SM8450 driver.

To: Bjorn Andersson <andersson@kernel.org>
To: Andy Gross <agross@kernel.org>
To: Konrad Dybcio <konrad.dybcio@linaro.org>
To: Michael Turquette <mturquette@baylibre.com>
To: Stephen Boyd <sboyd@kernel.org>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

---
Changes in v2:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v1: https://lore.kernel.org/r/20230103-topic-sm8550-upstream-dispcc-v1-0-81bfcc26b2dc@linaro.org



--- b4-submit-tracking ---
# This section is used internally by b4 prep for tracking purposes.
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    "revision": 2,
    "change-id": "20230103-topic-sm8550-upstream-dispcc-411b34c1b307",
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