[Bug preprocessor/58370] pre compiled headers failure on NetBSD/sparc64

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58370
Bug 58370 depends on bug 58397, which changed state.

Bug 58397 Summary: Please add host_hooks for NetBSD to make precompiled headers work
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58397

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED