[NPU] test TransformerTTS with NPU

paddlespeech/t2s/exps/transformer_tts/train.py

@@ -42,10 +42,12 @@ from paddlespeech.t2s.training.trainer import Trainer
 def train_sp(args, config):
     # decides device type and whether to run in parallel
     # setup running environment correctly
-    if (not paddle.is_compiled_with_cuda()) or args.ngpu == 0:
-        paddle.set_device("cpu")
-    else:
+    if paddle.is_compiled_with_cuda() and args.ngpu > 0:
         paddle.set_device("gpu")
+    elif paddle.is_compiled_with_npu() and args.ngpu > 0:
+        paddle.set_device("npu")
+    else:
+        paddle.set_device("cpu")
     world_size = paddle.distributed.get_world_size()
     if world_size > 1:
         paddle.distributed.init_parallel_env()