linux-firmware: Removed codeversion from brcm firmware filenames.
The basename-apiversion-codeversion construction for firmware filenames is not
used by most other firmware files, adds complexity, and is not providing any
value. Renamed the firmware files using just basename-apiversion and fixed
WHENCE to have correct names and path to these files.
Signed-off-by: Henry Ptasinski <henryp@broadcom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>