drm/xe: Define STATELESS_COMPRESSION_CTRL as mcr register

drm/xe: Define STATELESS_COMPRESSION_CTRL as mcr register

Register STATELESS_COMPRESSION_CTRL should be considered
mcr register which should write to all slices as per
documentation.

Bspec: 71185
Fixes: ecabb5e6ce54 ("drm/xe/xe2: Add performance turning changes")
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Shekhar Chauhan <shekhar.chauhan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240814095614.909774-4-tejas.upadhyay@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>