scripts/get_maintainer.pl: don't search MAINTAINERS for keywords or emails

Keyword matching uses K: patterns from MAINTAINERS, so if looking for the
MAINTAINERS maintainer, don't search MAINTAINERS for pattern matches.
MAINTAINERS also has rather a lot of email addresses and is easily
searched using grep "^M:", so skip it.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 65c6acf..77f4f2e 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -304,7 +304,7 @@
     }
     if ($from_filename) {
 	push(@files, $file);
-	if (-f $file && ($keywords || $file_emails)) {
+	if ($file ne "MAINTAINERS" && -f $file && ($keywords || $file_emails)) {
 	    open(my $f, '<', $file)
 		or die "$P: Can't open $file: $!\n";
 	    my $text = do { local($/) ; <$f> };