[OpenMP] Do not link static library with `-nogpulib`

Normally we do not link the device libraries if the user passed
`nogpulib` we do this for the standard bitcode library. This behaviour
was not added when using the static library for LTO, causing it to
always be linked in. This patch fixes that.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D129534