[dwarfdump] Add -lookup option

Add the option to lookup an address in the debug information and print
out the file, function, block and line table details.

Differential revision: https://reviews.llvm.org/D38409

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314817 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed