linux-firmware: Move all firmware into sub-packages

linux-firmware: Move all firmware into sub-packages

A lot of the firmware has already been broken out into sub-packages, but
a good number were still lingering in the base linux-firmware package.

Move all of the remaining firmware into sub-packages based on the
driver name in the WHENCE file or into existing sub-packages where a
file or two were missed.

Signed-off-by: Ryan Eatmon <reatmon@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>