kernel: modules: usb: Add DWC3 Qualcomm kmod

Since kernel 4.18 support for Qualcomm glue layer was
moved from DWC3 OF Simple to a separate DWC3 QCOM module.
So lets add it and make it depend on 4.19 kernel and make
sure that DWC3 OF Simple is not included if 4.19 is used.

Signed-off-by: Robert Marko <robimarko@gmail.com>

package/kernel/linux/modules/usb.mk

@@ -459,7 +459,7 @@ $(eval $(call KernelPackage,usb-dwc3))
 
 define KernelPackage/usb-dwc3-of-simple
   TITLE:=DWC3 USB simple OF driver
-  DEPENDS:=@TARGET_ipq40xx||@TARGET_ipq806x +kmod-usb-dwc3
+  DEPENDS:=@!LINUX_4_19 @TARGET_ipq40xx||@TARGET_ipq806x +kmod-usb-dwc3
   KCONFIG:= CONFIG_USB_DWC3_OF_SIMPLE
   FILES:= $(LINUX_DIR)/drivers/usb/dwc3/dwc3-of-simple.ko
   AUTOLOAD:=$(call AutoLoad,53,dwc3-of-simple,1)
@@ -474,6 +474,26 @@ endef
 
 $(eval $(call KernelPackage,usb-dwc3-of-simple))
 
+
+define KernelPackage/usb-dwc3-qcom
+  TITLE:=DWC3 Qualcomm USB driver
+  DEPENDS:=@LINUX_4_19 @TARGET_ipq40xx||@TARGET_ipq806x +kmod-usb-dwc3
+  KCONFIG:= CONFIG_USB_DWC3_QCOM
+  FILES:= $(LINUX_DIR)/drivers/usb/dwc3/dwc3-qcom.ko
+  AUTOLOAD:=$(call AutoLoad,53,dwc3-qcom,1)
+  $(call AddDepends/usb)
+endef
+
+define KernelPackage/usb-dwc3-qcom/description
+ Some Qualcomm SoCs use DesignWare Core IP for USB2/3 functionality.
+ This driver also handles Qscratch wrapper which is needed for
+ peripheral mode support.
+endef
+
+
+$(eval $(call KernelPackage,usb-dwc3-qcom))
+
+
 define KernelPackage/usb-acm
   TITLE:=Support for modems/isdn controllers
   KCONFIG:=CONFIG_USB_ACM