[AMDGPU][llvm-mc] Add some missing testcases to trap.s

Differential Revision: http://reviews.llvm.org/D19602

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268073 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed