On some distors (eg. latesst openSuSE), the ncurses headers are not
located in the usual location.
Hard-code this location in the kconfig Makefile, as a (temporary?)
workaround.
Reported-by: Simon Gornall <sgornall@apple.com>
[Fix suggested by Simon]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>