cmd/internal/obj/x86: fix oclass tests for Hsolaris
cmd/internal/obj/x86: fix oclass tests for Hsolaris

Use objabi.Hlinux for now.

Fixes #32028

Change-Id: If9745f72c0ee4444ea2a2faa50813d2e1ac2bf97
Reviewed-on: https://go-review.googlesource.com/c/go/+/177077
Reviewed-by: Cherry Zhang <d62e63aa42ce272d7b6a5055d97e942b33a34679@google.com>

golang/go,golang/go,nawawi/go,golang/go,akutz/go,CAFxX/go,CAFxX/go,cloudflare/go,akutz/go,akutz/go,nawawi/go,nawawi/go,golang/go,cloudflare/go,CAFxX/go,cloudflare/go,akutz/go,golang/go,akutz/go,golang/go,golang/go,cloudflare/go,nawawi/go,cloudflare/go,CAFxX/go,CAFxX/go,akutz/go,nawawi/go,cloudflare/go,cloudflare/go,nawawi/go,akutz/go,CAFxX/go,golang/go,nawawi/go,akutz/go,cloudflare/go,nawawi/go,CAFxX/go,CAFxX/go