ve-dbus-data-producers: add mk2-dbus

Since the mk3-usb can be used without gpio / and updated add mk2-dbus
as well. For mk3 support it must be started as `mk2-dbus -t mk3`.

meta-ve-software/recipes-packagegroups/packagegroup-ve-dbus-data-producers.bb

@@ -15,8 +15,6 @@ inherit packagegroup
 
 # List of application which provide data on the dbus in a VBusItem interface.
 # These are RRECOMMENDS so the are only included when available.
-# vecan_mk2 is not included on purpose, since it needs MACHINE specific gpio
-# lines in order to function correctly.
 
 RRECOMMENDS_${PN} += " \
 	can-bus-bms \
@@ -31,6 +29,7 @@ RRECOMMENDS_${PN} += " \
 	dbus-valence \
 	dbus-vebus-to-pvinverter \
 	gps-dbus \
+	mk2-dbus \
 	vecan-dbus \
 	vedirect-interface \
 "