qlnxe: Fix building as in-kernel component

Add some extra files for building the driver as part of the kernel.
Change some #defines to match those used when building as a module.

PR: 268354

Signed-off-by: Mark O'Donovan <shiftee@posteo.net>
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/779