fix move default not compile correctly on cuda92 (#48257)
Summary:
explicitly define move constructor when using cuda version <= 9200
this fixes https://github.com/pytorch/csprng/issues/84
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48257
Reviewed By: malfet, mrshenli
Differential Revision: D25123467
Pulled By: walterddr
fbshipit-source-id: 72deff82c421fbaada6f38b2b6288f7f2f833062
