rt-firmware needs updating to provide the firmware required by the most recent MRG-2.5.x kernel.
fixed in rt-firmware-2.4-1
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:1396