--- zzzz-none-000/linux-4.1.52/drivers/net/usb/Makefile	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/drivers/net/usb/Makefile	2022-03-02 11:37:13.000000000 +0000
@@ -2,6 +2,10 @@
 # Makefile for USB Network drivers
 #
 
+ifdef BCM_KF # defined(CONFIG_BCM_KF_USBNET)
+EXTRA_CFLAGS	+= -I$(INC_BRCMSHARED_PUB_PATH)/$(BRCM_BOARD)
+endif #BCM_KF # defined(CONFIG_BCM_KF_USBNET)
+
 obj-$(CONFIG_USB_CATC)		+= catc.o
 obj-$(CONFIG_USB_KAWETH)	+= kaweth.o
 obj-$(CONFIG_USB_PEGASUS)	+= pegasus.o