Adding quantized clamp kernel (#30541)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30541
ghstack-source-id: 95450749
Adding quantized clamp kernel
Test Plan:
Added test.
buck test mode/dev //caffe2/test:quantized -- 'test_qclamp \(test_quantized\.TestQuantizedOps\)' --print-passing-details
Differential Revision: D18739628
fbshipit-source-id: 38a029ab96c5b0689bb15c67dc4f274883e74975
