Buildroot support for BBBWireless


I am trying to create a minimal rootfs for BBBWireless.
I see that buildroot does support BBB and cah generate a very minimal rootfs for it.
But I could not find the support for BBBWireless in buildroot.
The BBB image from buildroot works on BBBW, but , as expected, the WiFi doesn’t work.

Have anyone tried creating an image for BBBW on buildroot and made the WiFi work as well ??
Or, is there any other build system (yocto, etc) that supports BBBW ?

Any help will be appreciated .