Adding back arguments, which were missed during the import of ncurses version
6.5, to the code gen awk script.
This is modified from lib_keyname.c and keys.list targets in
contrib/ncurses/ncurses/Makefile.in of
21817992b3
PR: 280697
Reported by: np
Reviewed by: bapt
Tested by: scf
Fixes: 21817992b3 ncurses: vendor import version 6.5
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D47153
