[Fix] nms_rotated_npu accepts angle parameter (#2674)

mmcv/ops/nms.py

@@ -412,6 +412,9 @@ def nms_rotated(dets: Tensor,
         input_labels = labels
     if dets.device.type == 'npu':
         order = scores.new_empty(0, dtype=torch.long)
+        coefficient = 57.29578  # 180 / PI
+        for i in range(dets.size()[0]):
+            dets_cw[i][4] *= coefficient  # radians to angle
         keep_inds = ext_module.nms_rotated(dets_cw, scores, order, dets_cw,
                                            input_labels, iou_threshold,
                                            multi_label)