ncurses: Don't put terminfo into the sysroot

ncurses: Don't put terminfo into the sysroot

This recudes the file count from ~2850 to ~100 which is a huge win
for reducing build directory clutter, its unlikely anything uses the
terminfo data or man pages in the sysroot. This is especially helpful
as we usually end up with two copies of these sets of files.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 443633dfc20177ef88a388d96745675817510c99)
Signed-off-by: Steve Sakoman <steve@sakoman.com>