drm/xe: Fix kerneldoc for xe_gt_tlb_inval_init_early

Correct the function name in the kerneldoc.
It is for below warning:
"Warning: drivers/gpu/drm/xe/xe_tlb_inval.c:136 expecting prototype for
xe_gt_tlb_inval_init(). Prototype was for xe_gt_tlb_inval_init_early()
instead"

v2: add () for the function. (Michal)

Fixes: db16f9d ("drm/xe: Split TLB invalidation code in frontend and backend")
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20260129233834.419977-7-shuicheng.lin@intel.com
(cherry picked from commit 0651dbb)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Author: ShuichengLin

drivers/gpu/drm/xe/xe_tlb_inval.c

@@ -112,7 +112,7 @@ static void tlb_inval_fini(struct drm_device *drm, void *arg)
 }
 
 /**
- * xe_gt_tlb_inval_init - Initialize TLB invalidation state
+ * xe_gt_tlb_inval_init_early() - Initialize TLB invalidation state
  * @gt: GT structure
  *
  * Initialize TLB invalidation state, purely software initialization, should