scripts/get_maintainer.pl: enable find_maintainer_files

Many MAINTAINERS files are in subdirectories.
We should enable searching these.

Reported-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 8b6037b..07800e6 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -59,7 +59,7 @@
 my $pattern_depth = 0;
 my $version = 0;
 my $help = 0;
-my $find_maintainer_files = 0;
+my $find_maintainer_files = 1;
 
 my $vcs_used = 0;