drm/radeon: switch to drm_*{get,put} helpers

drm_*_reference() and drm_*_unreference() functions are just
compatibility alias for drm_*_get() and drm_*_put() adn should not be
used by new code. So convert all users of compatibility functions to use
the new APIs.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c
index 4a4f953..9195227 100644
--- a/drivers/gpu/drm/radeon/radeon_cursor.c
+++ b/drivers/gpu/drm/radeon/radeon_cursor.c
@@ -307,7 +307,7 @@
 	robj = gem_to_radeon_bo(obj);
 	ret = radeon_bo_reserve(robj, false);
 	if (ret != 0) {
-		drm_gem_object_unreference_unlocked(obj);
+		drm_gem_object_put_unlocked(obj);
 		return ret;
 	}
 	/* Only 27 bit offset for legacy cursor */
@@ -317,7 +317,7 @@
 	radeon_bo_unreserve(robj);
 	if (ret) {
 		DRM_ERROR("Failed to pin new cursor BO (%d)\n", ret);
-		drm_gem_object_unreference_unlocked(obj);
+		drm_gem_object_put_unlocked(obj);
 		return ret;
 	}
 
@@ -352,7 +352,7 @@
 			radeon_bo_unpin(robj);
 			radeon_bo_unreserve(robj);
 		}
-		drm_gem_object_unreference_unlocked(radeon_crtc->cursor_bo);
+		drm_gem_object_put_unlocked(radeon_crtc->cursor_bo);
 	}
 
 	radeon_crtc->cursor_bo = obj;