buildroot

fluxbox: select xmodmap

Fluxbox uses xmodmap in its startup script.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>