drm/xe/gsc: Fix kernel doc for xe_gsc_create_host_session_id

Fix documentation for xe_gsc_create_host_session_id which
was xe_gsc_get_host_session_id.

Fixes: 152f2df9 ("drm/xe/hdcp: Enable HDCP for XE")
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240307045533.1867892-2-suraj.kandpal@intel.com