Add sc7180 camss subsys support

SM7125 is the SoC found in the Xiaomi Redmi Note 9 Pro(joyeuse) cellphone.
This series adds support to bring up the CSIPHY, CSID, VFE/RDI interfaces.

Since SM7125 is a low-speed variant of SC7180, SC7180 testers please
take a look and have a test as well.

sc7180 provides

- 2 x VFE
- 1 x VFE Lite
- 2 x CSID
- 1 x CSID Lite
- 4 x CSI PHY

The sc7180-camss binding should be comaptible with sdm845 yaml.
I've copied a new yaml from sdm845-camss.yaml, strip all _src clk and
put new maintainer information. If this is not desirable then i can add binding to
existing sdm845 yaml instead.

In addition, a bootable tree of sm7125/joyeuse is availble at:
https://github.com/99degree/linux/tree/camss
  

To: Robert Foss <[email protected]>
To: Todor Tomov <[email protected]>
To: Bryan O'Donoghue <[email protected]>
To: Mauro Carvalho Chehab <[email protected]>
To: Rob Herring <[email protected]>
To: Krzysztof Kozlowski <[email protected]>
To: Conor Dooley <[email protected]>
To: [email protected]
To: Bjorn Andersson <[email protected]>
To: Konrad Dybcio <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: George Chan <[email protected]>

---
Changes in v2:
- Revised dt-binding as stated by krzk
- Added dt-binding item power-domain-name as stated by Bryan
- Combine patch #2 and #3 as stated by krzk and Bryan
- Split eror-print log for clk name from patch #5 as suggested by Konrad
- Reformat dt-node of camss as stated by krzk
- Corrected phy init sequence for v1.2.2 as spot by Bryan
- Link to v1: https://lore.kernel.org/r/[email protected]

--- b4-submit-tracking ---
# This section is used internally by b4 prep for tracking purposes.
{
  "series": {
    "revision": 2,
    "change-id": "20240621-b4-sc7180-camss-cddc6b60a9b4",
    "prefixes": [],
    "history": {
      "v1": [
        "[email protected]"
      ]
    }
  }
}