kconfig: fix ncurses headers location

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>

CT_OBSOLETE=y

CT_LOCAL_TARBALLS_DIR="${HOME}/src"

CT_SAVE_TARBALLS=y

CT_LOG_EXTRA=y

CT_ARCH_sh=y

CT_ARCH_SH_SH4=y

CT_KERNEL_linux=y

CT_KERNEL_V_2_6_27_62=y

CT_BINUTILS_V_2_19_1a=y

CT_CC_V_4_3_2=y

CT_CC_LANG_CXX=y

CT_LIBC_glibc=y

CT_LIBC_GLIBC_V_2_9=y

# CT_LIBC_GLIBC_FORCE_UNWIND is not set

CT_GMP_V_4_3_2=y

CT_MPFR_V_2_4_2=y