THe u-boot port for RPI-B was updated to use u-boot-master, this cause
an update in u-boot version to v2017.09 and changing the filename.
The various firmware files for the RPI* are now in a common ports
sysutils/rpi-firmware as they are shared on all the RPI version.
Update the release files to copy the right files from the right location.
Reviewed by: gjb
MFC after: 3 days
4f99504d8b