drm/xe: Include running dword offset in default_lrc dumps

drm/xe: Include running dword offset in default_lrc dumps

Printing a running dword offset in the default_lrc_* debugfs entries
makes it easier for developers to find the right offsets to use in
regs/xe_lrc_layout.h and/or compare the default LRC contents against the
bspec-documented LRC layout.

Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patch.msgid.link/20260311-default_lrc_offsets-v1-1-58d8ed3aa081@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>