[llvm-symbolizer] Add -addresses, -a as aliases for -print-address

Summary: Provides -addresses, -a as aliases for -print-address. Motivation: https://bugs.llvm.org/show_bug.cgi?id=40067.

Reviewers: jhenderson, ruiu, rnk, fjricci

Reviewed By: jhenderson

Subscribers: rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D56635

llvm-svn: 351043
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index c942d80..1b8986d 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -106,7 +106,7 @@
  location, look for the debug info at the .dSYM path provided via the
  ``-dsym-hint`` flag. This flag can be used multiple times.
 
-.. option:: -print-address
+.. option:: -print-address, -addresses, -a
 
  Print address before the source code location. Defaults to false.