Modify operation enum.

Remove ROTATED_BBOX_TRANSFORM since it is no longer needed.
Add DETECTION_POSTPROCESS for SSD NMS postprocessing op.

Bug: 120983926
Test: NeuralNetworksTest_static
Change-Id: Id6b1021c8707734499feddddf0aac24a3fff90f8
diff --git a/neuralnetworks/1.2/types.hal b/neuralnetworks/1.2/types.hal
index 40c07e7..21b85eb 100644
--- a/neuralnetworks/1.2/types.hal
+++ b/neuralnetworks/1.2/types.hal
@@ -150,7 +150,7 @@
     TRANSPOSE_CONV_2D = 84,
     UNIDIRECTIONAL_SEQUENCE_LSTM = 85,
     UNIDIRECTIONAL_SEQUENCE_RNN = 86,
-    ROTATED_BBOX_TRANSFORM = 87,
+    DETECTION_POSTPROCESSING = 87,
     ABS = 88,
     ROI_POOLING = 89,
     EQUAL = 90,