kmod-usb-bcma is not available

[Nerijus Baliūnas]

Hello,

I am using openwrt-19.07 branch, CONFIG_TARGET_brcm47xx, device is Option 
Globesurfer III.
I have an older openwrt image from 2015 with kernel 3.3.8, where 3g modem is 
seen by lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 04cc:1520 ST-Ericsson USB 2.0 Hub (Avocent KVM)
Bus 001 Device 003: ID 0af0:7601 Option Globetrotter MO40x 3G Modem (GTM 382)

With openwrt-19.07 branch lsusb does not see it:
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 04cc:1520 ST-Ericsson USB 2.0 Hub (Avocent KVM)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I suspect it is because older image has bcma-hcd.ko kernel module. I tried to 
include
kmod-usb-bcma in openwrt-19.07, but when compiling I get:
WARNING: kmod-usb-bcma is not available in the kernel config - generating 
empty package.
Why is it so? In package/kernel/linux/modules/usb.mk:
define KernelPackage/usb-ohci
   TITLE:=Support for OHCI controllers
   DEPENDS:= \
         +TARGET_bcm53xx:kmod-usb-bcma \
         +TARGET_brcm47xx:kmod-usb-bcma \
         +TARGET_brcm47xx:kmod-usb-ssb

My .config is https://paste.centos.org/view/6456fe38 (I added 
CONFIG_DEFAULT_kmod-bcma=y to it too).

Thanks,
Nerijus