Enable geometric ops, exp2, expm1, rsqrt & erfc for BFloat16 on CUDA (#57913)
Summary:
Ops enabled for BFloat16 on CUDA (12 in total):
`acos`
`asin`
`atan`
`cosh`
`sin`
`sinh`
`tan`
`sinc`
`exp2`
`erfc`
`expm1`
`rsqrt`
Enabled backward for `cos` on CUDA.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57913
Reviewed By: mruberry
Differential Revision: D28342969
Pulled By: ngimel
fbshipit-source-id: 3c140fe408cbf93b21296a52d95ef0a0ccd96503
