Add Brother HL-2240D

[aqk]

Output of lpinfo:

$ sudo lpinfo --include-schemes usb -l -v
Device: uri = usb://Brother/HL-2240D%20series?serial=J1N704065
        class = direct
        info = Brother HL-2240D series
        make-and-model = Brother HL-2240D series
        device-id = MFG:Brother;CMD:PJL,HBP;MDL:HL-2240D series;CLS:PRINTER;
        location = 

[QORTEC]

This printer can also found in my pull request #92, added in commit f3e4621.