https://bugs.freedesktop.org/show_bug.cgi?id=91880
--- Comment #14 from Alex Deucher alexdeucher@gmail.com --- (In reply to John Frei from comment #13)
Created attachment 118933 [details] modinfo_radeon
Here's the output of 'modinfo radeon'.
As you can see, the uppercase 'HAWAII_*' firmware is still listed, too, although these files were deleted from the /lib/firmware/radeon/ directory.
The upper case ones were the original versions without the header information. They are only used for backwards compatibility. All you need is the lower case ones.