[PATCH 0/2] powerpc: unrel_branch_check.sh: enable llvm-objdump

These 2 patches enable this script to work properly when llvm-objtool
is being used.

They depend on my previos series that make this script suck less.

Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Bill Wendling <morbo@google.com>