checkpatch: %Lx tests should hand %% as a literal

Ensure that we handle literal %'s correctly when adjacent to a %Lx.

	%Lx	bad
	%%Lx	good
	%%%Lx	bad
Signed-off-by: NAndy Whitcroft <apw@shadowen.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -2392,6 +2392,7 @@ sub process {
 		my $string;
 		while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
 			$string = substr($rawline, $-[1], $+[1] - $-[1]);
+			$string =~ s/%%/__/g;
 			if ($string =~ /(?<!%)%L[udi]/) {
 				WARN("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
 				last;