[nnc] Use given kernel function name while emitting code (#66216)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/66216
Test Plan: Imported from OSS
Reviewed By: dagitses, priyaramani
Differential Revision: D31445799
Pulled By: navahgar
fbshipit-source-id: 8d164209831339d364710b14f6a263a16e108281
