Suppress warnings caused by including slicer headers in ti-stress

Slicer headers cause several warnings (and due to -Werror, errors) to be
sent by the compiler when we include them. We ignore these errors until
they can be fixed.

Bug: 65298177
Test: mma -j40
Change-Id: If1643ff99e07cd755d59e340584870b259b4c869
1 file changed