ARM: dts: stm32: Add USB OTG pinctrl and regulator nodes into SPL DT on DHCOR

Fix the following warning in SPL and make sure that even DTs which
enforce Vbus detection using u-boot,force-vbus-detection;, the DFU
in SPL will work.

dwc2-udc-otg usb-otg@49000000: prop pinctrl-0 index 0 invalid phandle

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
index 338b674..cd3190c 100644
--- a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
@@ -179,6 +179,14 @@
 	u-boot,dm-spl;
 };
 
+&usb33 {
+	u-boot,dm-spl;
+};
+
+&usbotg_hs_pins_a {
+	u-boot,dm-spl;
+};
+
 &usbotg_hs {
 	u-boot,dm-spl;
 };