usb: dwc2: change compatible st,stm32mp1-hsotg to st,stm32mp15-hsotg

The Linux kernel v5.7-rc1 introduced the compatible "st,stm32mp15-hsotg".

See Linux kernel commit d49850110434 ("dt-bindings: usb: dwc2: add
support for STM32MP15 SoCs USB OTG HS and FS")

This patch updates the supported compatible in DWC2 driver,
removes the add-on done in U-Boot dtsi and keeps the compatible
defined in SOC dtsi arch/arm/dts/stm32mp151.dtsi:

usbotg_hs: usb-otg@49000000 {
	compatible = "st,stm32mp15-hsotg", "snps,dwc2";
	reg = <0x49000000 0x10000>;
...
};

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/arch/arm/dts/stm32mp15-u-boot.dtsi b/arch/arm/dts/stm32mp15-u-boot.dtsi
index d0aa5ea..43a7909 100644
--- a/arch/arm/dts/stm32mp15-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15-u-boot.dtsi
@@ -228,6 +228,3 @@
 	resets = <&rcc UART8_R>;
 };
 
-&usbotg_hs {
-	compatible = "st,stm32mp1-hsotg", "snps,dwc2";
-};
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c
index e3871e3..ecac80f 100644
--- a/drivers/usb/gadget/dwc2_udc_otg.c
+++ b/drivers/usb/gadget/dwc2_udc_otg.c
@@ -1176,7 +1176,7 @@
 static const struct udevice_id dwc2_udc_otg_ids[] = {
 	{ .compatible = "snps,dwc2" },
 	{ .compatible = "brcm,bcm2835-usb" },
-	{ .compatible = "st,stm32mp1-hsotg",
+	{ .compatible = "st,stm32mp15-hsotg",
 	  .data = (ulong)dwc2_set_stm32mp1_hsotg_params },
 	{},
 };