freedreno: update generated headers

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno: add adreno 420 support

Very initial support.  Basic stuff working (es2gears, es2tri, and maybe
about half of glmark2).  Expect broken stuff.  Still missing: mem->gmem
(restore), queries, mipmaps (blob segfaults!), hw binning, etc.

Signed-off-by: Rob Clark <robclark@freedesktop.org>