AMDGPU/GlobalISel: Fix ValueMapping tables for i1

This was incorrectly selecting SGPR for any i1 values,
e.g. G_TRUNC to i1 from a VGPR was still an SGPR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349715 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed