Changes

Fix reload of iwlwifi module (Closes: #1006708)

In case the iwlwifi module was already loaded, but needs to be reloaded
as e.g additional further needed firmware is detected, added and loaded,
it was not simply possible to remove and reload that module as this was
resulting in a error message like:

-----%<-----
modprobe: FATAL: Module iwlwifi is in use
----->%----

As the module iwlmvm is a depending module on iwlwifi we need to reload
both modules (iwlmvm and iwlwifi) if not yet available but required
firmware files getting provided by the user.

Note:
We can add the module iwldvm for reloading probably too here, as I
haven't hardware which is needing this module to work I was not able to
proof my assumption.

Remove obsolete discover related files/dependencies