Build EigenBlas as static library (#44747)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/43709
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44747
Reviewed By: ezyang
Differential Revision: D23717927
Pulled By: malfet
fbshipit-source-id: c46fbcf5a55895cb984dd4c5301fbcb784fc17d5
