Most of them were actually unused.  The memory type (KMEM vs SMI) only
applied to very old a2xx era devices that had a small/fast stacked
memory (SMI) vs normal memory (KMEM).  And the cache flags are ignored
(ie. everything is writecombine), but we can add new cache flags later
when they actually do something.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <mesa/mesa!10444>