drm/xe/sysfs: Simplify sysfs registration

Instead of manually maintaining each sysfs file define and use
attribute groups and register them using device managed function.
Then use is_visible() to filter-out unsupported attributes.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250916170029.3313-3-michal.wajdeczko@intel.com