scripts/recordmcount.pl: Make vim and emacs indent the same

By default, emacs indents Perl files with 4 spaces, but will use tabs
where 8 spaces are used. Add a vim command of softtabstop=4, to make vim
behave the same. This should remove the issue of developers using vim
having causing different indentation.

"John (Warthog9) Hawley" <warthog9@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

scripts/recordmcount.pl

@@ -642,3 +642,5 @@ if ($#converts >= 0) {
 `$rm $mcount_o $mcount_s`;
 
 exit(0);
+
+# vim: softtabstop=4