DEVELOPERS: add entry for package/mbpoll

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1603,6 +1603,9 @@ N:	John Faith <jfaith@impinj.com>
 F:	package/python-inflection/
 F:	package/sdbusplus/
 
+N:	Jon Ringle <jringle@gridpoint.com>
+F:	package/mbpoll/
+
 N:	Jonathan Ben Avraham <yba@tkos.co.il>
 F:	arch/Config.in.xtensa
 F:	package/autofs/