drm/xe/oa: Store forcewake reference in stream structure

drm/xe/oa: Store forcewake reference in stream structure

Calls to xe_force_wake_put() should generally pass the exact reference
returned by xe_force_wake_get().  Since OA grabs and releases forcewake
in different functions, xe_oa_stream_destroy() is currently calling put
with a hardcoded ALL mask.  Although this works for now, it's somewhat
fragile in case OA moves to more precise power domain management in the
future.

Stash the original reference obtained during stream initialization
inside the stream structure so that we can use it directly when the
stream is destroyed.

Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20251110232017.1475869-35-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>