freedreno: deduplicate a3xx+ disasm

freedreno: deduplicate a3xx+ disasm

Merge the extra tracking that is useful for generating stats from asm
(as opposed to ir), and for guestimating things like inputs and outputs
(mostly useful for r/e) into ir3's version and drop cffdec's version.

There is a small change in disasm output for the decode tools, in that
it no longer prints the used consts, but rather just the max accessed
const.  This is the more useful piece of information, and avoids making
the shared regmask type big enough to deal with the const reg file.
Additional error checking for invalid regids causes crashdec to bail
out sooner when decoding memory that *might* hold valid instructions.
Also, crashdec no longer prints stats, because stats aren't very useful
when trying to decode random instruction memory (which might or might
not be valid instructions).

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6070>