Updating hardcoded "of-display" devices

[Cyril Brulebois]

Hi,

We've spotted a regression with the Debian Installer on ppc64el, and
I've confirmed that the first patch fixes fbdev/offb as expected (or at
least works around the regression, see last part of the commit message):
 - [PATCH 1/2] fbdev/offb: Update expected device name

Since I've spotted that drm/ofdrm is affected as well, I'm submitting a
similar patch for it, but I can't really test it. I suppose Thomas who
introduced this new driver during the v6.2 release cycle will be able
to take it from there if needed:
 - [PATCH 2/2] drm/ofdrm: Update expected device name


Cheers,
-- 
Cyril Brulebois -- Debian Consultant @ DEBAMAX -- https://debamax.com/