From: t...@redhat.com
Date: Thu, 23 Jul 2020 07:22:10 -0700
> From: Tom Rix
>
> A link error
>
> ld: drivers/net/usb/cdc_ncm.o:
> undefined reference to `usbnet_cdc_update_filter'
>
> usbnet_cdc_update_filter is defined in cdc_ether.c
> Building of cdc_ether.o is controlled by USB_NET_CDCETH
From: Tom Rix
A link error
ld: drivers/net/usb/cdc_ncm.o:
undefined reference to `usbnet_cdc_update_filter'
usbnet_cdc_update_filter is defined in cdc_ether.c
Building of cdc_ether.o is controlled by USB_NET_CDCETHER
Building of cdc_ncm.o is controlled by USB_NET_CDC_NCM
So add a select USB
