ipq806x: update USB3 modules for 4.19

- Use new dwc3-qcom usb driver.
- Drop dwc3-of-simple as we have a dedicated driver now.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
[split into separate commit, commit subject facelift]
Signed-off-by: Petr Štetiar <ynezz@true.cz>

target/linux/ipq806x/Makefile

@@ -20,7 +20,7 @@ DEFAULT_PACKAGES += \
 	kmod-leds-gpio kmod-gpio-button-hotplug swconfig \
 	kmod-ata-core kmod-ata-ahci kmod-ata-ahci-platform \
 	kmod-usb-ohci kmod-usb2 kmod-usb-ledtrig-usbport \
-	kmod-usb3 kmod-usb-dwc3-of-simple kmod-usb-phy-qcom-dwc3 \
+	kmod-usb-phy-qcom-dwc3 kmod-usb3 kmod-usb-dwc3-qcom \
 	kmod-ath10k-ct wpad-basic \
 	uboot-envtools