linux-firmware and linux-firmware-whence (meta package for mostly iwl
firmwares) packages account for approx. 289 M install size on a F30
system, and linux-firmware for approx. 176 M on CentOS 7. Users needing
these firmwares are eventually baremetal users and are not looking for a
very minimal operating system base install like virtual image users are.
Thus, a non-minimal OS element is better suited for them. Alternatively,
it could be later considered a dedicated firmware element.
This is inline with I8ce65e1d357d15e8ed8995ad1dcaea02bbd1986f.
Change-Id: If104fc3c1e9349b8d501a2351fff1ab4c0dbc6a4
