dt-bindings: usb: dwc2: Fix issues for stm32mp15x SoC

Correct the compatible list for stm32mp15x SoC.
Fix the name of the stm32mp15x dedicated supply to be aligned with
what the driver use.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

Documentation/devicetree/bindings/usb/dwc2.yaml

@@ -44,7 +44,9 @@ properties:
       - const: st,stm32f4x9-hsotg
       - const: st,stm32f7-hsotg
       - const: st,stm32mp15-fsotg
+      - items:
           - const: st,stm32mp15-hsotg
+          - const: snps,dwc2
       - const: samsung,s3c6400-hsotg
 
   reg:
@@ -93,7 +95,7 @@ properties:
   vusb_a-supply:
     description: phandle to voltage regulator of analog section.
 
-  vusb33d-supply:
+  usb33d-supply:
     description: reference to the VBUS and ID sensing comparators supply, in
       order to perform OTG operation, used on STM32MP15 SoCs.