remoteproc: qcom_q6v5_pas: add support for SM8550 adsp, cdsp & mpss

This patchsets adds support for the aDSP, cDSP and MPSS found in the
SM8550 SoC.

The aDSP, cDSP and MPSS boot process on SM8550 now requires a secondary
"Devicetree" firmware to be passed along the main Firmware, and the cDSP
a new power domain named "NSP".

In order to satisfy the load & authentication order required by the SM8550
SoC, the following is implemented:
- "Devicetree" firmware request & load in dedicated memory
- Q6V5 prepare
- Power Domain & Clocks enable
- "Devicetree" firmware authentication
- Main firmware load in dedicated memory
- Main firmware authentication
- Q6V5 startup
- "Devicetree" firmware metadata release
- Main metadata release

When booting older platforms, the "Devicetree" steps would be
bypassed and the load & authentication order would still be valid.

Bindings changes depends on:
- https://lore.kernel.org/all/20221124184333.133911-1-krzysztof.kozlowski@linaro.org/



To: Andy Gross <agross@kernel.org>
To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konrad.dybcio@somainline.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
To: Manivannan Sadhasivam <mani@kernel.org>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: Amol Maheshwari <amahesh@qti.qualcomm.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-remoteproc@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

---
Changes in v4:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v3: https://lore.kernel.org/r/20221114-narmstrong-sm8550-upstream-remoteproc-v3-0-62162a1df718@linaro.org

Changes in v3:
- fix mpss matching in bindings, tested against DT
- Link to v2: https://lore.kernel.org/r/20221114-narmstrong-sm8550-upstream-remoteproc-v2-0-12bc22255474@linaro.org

Changes in v2:
- Moved the SM8550 pas bindings on top of "split and reorganize PAS/PIL" v3 patchset 
- Incorporated DSM memory support into pas bindings & driver
- Moved second DTB firmware into second entry of firmware-name
- Dropped applied "qcom,fastrpc: increase allowed iommus entries" patch
- Link to v1: https://lore.kernel.org/r/20221114-narmstrong-sm8550-upstream-remoteproc-v1-0-104c34cb3b91@linaro.org

--- b4-submit-tracking ---
# This section is used internally by b4 prep for tracking purposes.
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    "change-id": "20221114-narmstrong-sm8550-upstream-remoteproc-804f3fbb34bf",
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