radv: do not enable DCC for MSAA images without FMASK

radv: do not enable DCC for MSAA images without FMASK

I don't know how this is supposed to work, especially for fast clears
because CMASK should be cleared to 0xC but FMASK implies CMASK.
This fixes a bunch of MSAA test failures on GFX10.3 with
RADV_DEBUG=nofmask.

Cc: 22.3 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20054>
(cherry picked from commit 84a7138d3cfca05fbd623707525b9d4479a27e94)