[Bug testsuite/66734] Many MPX tests are skipped

[ienkovich at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66734
Bug 66734 depends on bug 66737, which changed state.

Bug 66737 Summary: ld: warning: -z bndplt ignored
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66737

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