Merge branch 'nfp-build-and-FW-initramfs-updates'

Jakub Kicinski says:

====================
nfp: build and FW initramfs updates

This set brings empty makefiles to allow building single object files
(useful for build-testing), Kbuild does not cater to this use case
too well.  There are two ethernet drivers right now which suffer
from this (nfp, aquantia), both are fixed.

Dirk adds an uncommon FW image name to the list of firmware files
module may request.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>