scripts/documentation-file-ref-check: check tools/*/Documentation

Some files, like tools/memory-model/README has references to
a Documentation file that is locale to it. Handle references
that are relative to them too.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>

scripts/documentation-file-ref-check

@@ -78,6 +78,13 @@ while (<IN>) {
 		# Check if exists, evaluating wildcards
 		next if (grep -e, glob("$ref $fulref"));
 
+		# Accept relative Documentation patches for tools/
+		if ($f =~ m/tools/) {
+			my $path = $f;
+			$path =~ s,(.*)/.*,$1,;
+			next if (grep -e, glob("$path/$ref $path/$fulref"));
+		}
+
 		if ($fix) {
 			if (!($ref =~ m/(scripts|Kconfig|Kbuild)/)) {
 				$broken_ref{$ref}++;