loader: Add a list of firmware name mapping

[manu]

Summary

Since we started to ship raw firmware for iwm(4), users who loads
the driver from loader are having problems as loader don't know that
the firmwares are now raw files and not kernel modules anymore.
Start a list of default entry for iwm(4) firmwares name mapping so it will
still works when loaded from loader.

Sponsored by: Beckhoff Automation GmbH & Co. KG

[bz]

While I still think we are digging deeper holes now than the one you asked me to dig a year ago when on core this will definitively help users and go in accordance with the man page so should be transparent.

[imp]

We need to enhance firmware(9) to allow drivers to request a load yhen get a callback later in boot.

This is an ok workaround for the moment though.

[kevans]

stand/defaults/loader.conf

187

/boot/firmware probably should have been added to module_path instead until we grow some notion of loader-only module_path additions

[manu]

Add /boot/firmware to module_path so we can remove the filename mapping part.

[manu]

stand/defaults/loader.conf

187

Done now, I think that I'll also work on detecting type based on the path (dtb/firmware etc ...)

[kevans]

stand/defaults/loader.conf

187

Thanks; no objection to landing this now if you'd prefer, though. I can see a couple of ways to implement some type autodetection that could be handy for more general use.

[imp]

Same a Kyle. Don't want to get in the way, but i have ideas on path driven default type