python3: resolve ncurses host contamination

(From OE-Core rev: ee7be51444b609a5cc1fd223b9395e9642d3bfac)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python3_3.8.1.bb

@@ -31,6 +31,7 @@ SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.xz \
            file://0001-Makefile-do-not-compile-.pyc-in-parallel.patch \
            file://0001-configure.ac-fix-LIBPL.patch \
            file://0001-python3-Do-not-hardcode-lib-for-distutils.patch \
+           file://0020-configure.ac-setup.py-do-not-add-a-curses-include-pa.patch \
            "
 
 SRC_URI_append_class-native = " \