drm/xe: Don't initialize tile_count in xe_info_init_early()

drm/xe: Don't initialize tile_count in xe_info_init_early()

The value of xe->info.tile_count is only really valid after
xe_info_probe_tile_count().  Any use of tile_count before that point
is invalid and, consequently, initializing it in xe_info_init_early()
is pointless.

Move the initialization to xe_info_probe_tile_count().

Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Reviewed-by: Violet Monti <violet.monti@intel.com>
Link: https://patch.msgid.link/20260609-xe-probe-info-v1-8-21e83e188e60@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>