Added per channel separate test cases for fc and deconv tests. (#37624)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/37624
Test Plan:
qnnpack tests
fully-connected-test
deconvolution-test
Imported from OSS
Differential Revision: D21339038
fbshipit-source-id: c1f6e9c39de51ab4ab18cd29055b5879e3137f1a