[quant][graphmode] Move avg_pool/adaptive_avg_pool to general value ops (#38330)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/38330
Test Plan:
python test/test_quantization.py TestQuantizeScriptPTSQOps.test_quantize_general_value_ops
Imported from OSS
Differential Revision: D21533452
fbshipit-source-id: 56928d93624f7c3d5c61f2627a19c5d3bb595202
