drm/xe: Use xe_bo_lock()/xe_bo_unlock() helpers

There is no change in functionality. Using the helper function
defined within the driver for locking/unlocking the reservation
object.

Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240424043910.2190376-3-himal.prasad.ghimiray@intel.com

drivers/gpu/drm/xe/xe_lrc.c

@@ -1382,7 +1382,7 @@ void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot)
 	if (!snapshot->lrc_snapshot)
 		goto put_bo;
 
-	dma_resv_lock(bo->ttm.base.resv, NULL);
+	xe_bo_lock(bo, false);
 	if (!ttm_bo_vmap(&bo->ttm, &src)) {
 		xe_map_memcpy_from(xe_bo_device(bo),
 				   snapshot->lrc_snapshot, &src, snapshot->lrc_offset,
@@ -1392,7 +1392,7 @@ void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot)
 		kvfree(snapshot->lrc_snapshot);
 		snapshot->lrc_snapshot = NULL;
 	}
-	dma_resv_unlock(bo->ttm.base.resv);
+	xe_bo_unlock(bo);
 put_bo:
 	xe_bo_put(bo);
 }

drivers/gpu/drm/xe/xe_vm.c

@@ -3352,7 +3352,7 @@ void xe_vm_snapshot_capture_delayed(struct xe_vm_snapshot *snap)
 		}
 
 		if (bo) {
-			dma_resv_lock(bo->ttm.base.resv, NULL);
+			xe_bo_lock(bo, false);
 			err = ttm_bo_vmap(&bo->ttm, &src);
 			if (!err) {
 				xe_map_memcpy_from(xe_bo_device(bo),
@@ -3361,7 +3361,7 @@ void xe_vm_snapshot_capture_delayed(struct xe_vm_snapshot *snap)
 						   snap->snap[i].len);
 				ttm_bo_vunmap(&bo->ttm, &src);
 			}
-			dma_resv_unlock(bo->ttm.base.resv);
+			xe_bo_unlock(bo);
 		} else {
 			void __user *userptr = (void __user *)(size_t)snap->snap[i].bo_ofs;