[clang] [Driver] Some adjustments for reloctable linking on OpenBSD (PR #67254)

[Raul Tambre via cfe-commits]

tambry wrote:

reloctable→relocatable

Just a fly-by, but IMO the commit message ought to describe the change – "some changes" doesn't give much insight.

https://github.com/llvm/llvm-project/pull/67254