AMDGPU: Allow fp32-denormals feature for r600 targets

This was accidentally removed in r335942.

Differential Revision: https://reviews.llvm.org/D49934

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@338569 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed