Machine model: Generate table entries for super-resources.

Machine model: Generate table entries for super-resources.

Super-resources and resource groups are two ways of expressing
overlapping sets of processor resources. Now we generate table entries
the same way for both so the scheduler never needs to explicitly check
for super-resources.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180162 91177308-0d34-0410-b5e6-96231b3b80d8