[CodeGen] Unify the syntax of MBB successors in MIR and -debug output

Instead of:

Successors according to CFG: %bb.6(0x12492492 / 0x80000000 = 14.29%)

print:

successors: %bb.6(0x12492492); %bb.6(14.29%)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324685 91177308-0d34-0410-b5e6-96231b3b80d8
16 files changed