debug/gdb: fix building the native tic

The native 'tic' will _always_ be run on the build
machine, so no need to handle canadian/native/...

Reported by: Trevor Woerner
http://sourceware.org/ml/crossgcc/2010-03/msg00055.html
(transplanted from 26e89d367ea11660fd3a0bf0bcad8763e4fa21cf)

--- binutils/ld/ldmain.c

+++ binutils/ld/ldmain.c

@@ -273,2 +273,5 @@ main (int argc, char **argv)

   link_info.emit_hash = TRUE;

+#ifndef __mips__

+  link_info.emit_gnu_hash = TRUE;

+#endif

   link_info.callbacks = &link_callbacks;