tools/missing-macros: bump version of makeinfo alternative script

Some new releases of GNU tools are checking for a higher version
of makeinfo than what our scripted alternative shows
when working with checked-out sources instead of releases.

Since this is a "fake" makeinfo we can also just fake the version.

Signed-off-by: Michael Pratt <[email protected]>

tools/missing-macros/src/bin/makeinfo

@@ -26,7 +26,7 @@ Getopt::Long::GetOptions(
 
 if ($version)
 {
-	print "makeinfo (OpenWrt stub) 4.13\n";
+	print "makeinfo (OpenWrt stub) 9.99\n";
 	exit 0;
 }