heimdal: needs host-ncurses

Otherwise it will fail with an error like this one:

checking for tgetent in -lcurses... no
checking for tgetent in -lncurses... no
configure: error: libcurses or libncurses are required!

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>