media: dt-bindings: media: camss: Fixup vdda regulator descriptions sdm845

If we review the schematic for RB3 Thundercomm document Turbox-845 we see
that the CAMSS CSI PHY has the same basic power-rail layout as UFS, PCIe
and USB PHYs.

We should therefore have two regulator declarations as is the case for UFS,
PCIe and USB.
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/qcom,sdm845-camss.yaml

@@ -186,9 +186,13 @@ properties:
       - const: vfe1
       - const: vfe_lite
 
-  vdda-supply:
+  vdda-phy-supply:
     description:
-      Definition of the regulator used as analog power supply.
+      Phandle to a regulator supply to PHY core block.
+
+  vdda-pll-supply:
+    description:
+      Phandle to 1.8V regulator supply to PHY refclk pll block.
 
 required:
   - clock-names
@@ -200,7 +204,8 @@ required:
   - power-domains
   - reg
   - reg-names
-  - vdda-supply
+  - vdda-phy-supply
+  - vdda-pll-supply
 
 additionalProperties: false
 
@@ -344,7 +349,8 @@ examples:
           "vfe1",
           "vfe_lite";
 
-        vdda-supply = <&reg_2v8>;
+        vdda-phy-supply = <&vreg_l1a_0p875>;
+        vdda-pll-supply = <&vreg_l26a_1p2>;
 
         ports {
           #address-cells = <1>;