kconfig: Add print_title helper in lxdialog

Simplify check for long title and use a helper function in util.c

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

diff --cc scripts/lxdialog/checklist.c
Simple merge

diff --cc scripts/lxdialog/dialog.h
Simple merge

diff --cc scripts/lxdialog/inputbox.c
Simple merge

diff --cc scripts/lxdialog/menubox.c
Simple merge

diff --cc scripts/lxdialog/msgbox.c
Simple merge

diff --cc scripts/lxdialog/textbox.c
Simple merge

diff --cc scripts/lxdialog/util.c
Simple merge

diff --cc scripts/lxdialog/yesno.c
Simple merge