Add the option, -universal-headers, used with -macho to print the Mach-O universal headers to llvm-objdump.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225537 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-objdump/llvm-objdump.cpp

@@ -891,7 +891,8 @@ int main(int argc, char **argv) {
       && !Rebase
       && !Bind
       && !LazyBind
-      && !WeakBind) {
+      && !WeakBind
+      && !(UniversalHeaders && MachOOpt)) {
     cl::PrintHelpMessage();
     return 2;
   }