DEVELOPERS: add myself as contact for systemd

As requested, I add myself to systemd.

Signed-off-by: Norbert Lange <nolange79@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1961,6 +1961,7 @@ F:	package/tpm-tools/
 F:	package/trousers/
 
 N:	Norbert Lange <nolange79@gmail.com>
+F:	package/systemd/
 F:	package/tcf-agent/
 
 N:	Nylon Chen <nylon7@andestech.com>