drm/xe/gt: Use CLASS() for forcewake in xe_gt_enable_comp_1wcoh

drm/xe/gt: Use CLASS() for forcewake in xe_gt_enable_comp_1wcoh

Adopt the scoped forcewake management using CLASS(xe_force_wake, ...)
to simplify the code and ensure proper resource release.

Cc: Xin Wang <x.wang@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Xin Wang <x.wang@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20260123180425.3262944-2-shuicheng.lin@intel.com