[AMDGPU] Fix GCNSchedStrategy.cpp debug output

There is typo in the debug output: top and bottom candidates are switched.

Differential Revision: https://reviews.llvm.org/D29608

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294257 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed