Bump buidlroot version to 2018.02.6

bsp/buildroot/package/python/0001-setup.py-do-not-add-invalid-header-locations.patch

@@ -0,0 +1,42 @@
+From 3dc31a435b67de2ba3dd3457f0c939e20b58e8de Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Tue, 7 Mar 2017 22:17:06 +0100
+Subject: [PATCH] setup.py: do not add invalid header locations
+
+This piece of code incorrectly adds /usr/include to
+self.compiler.include_dirs, and results in the following invalid
+compilation line:
+
+/home/thomas/projets/buildroot/output/host/usr/bin/arm-none-linux-gnueabi-gcc -fPIC \
+  -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 \
+  -pipe -Os -DNDEBUG -g -O3 -Wall -Wstrict-prototypes \
+  -I/usr/include -I. -IInclude -I./Include \
+  -I/home/thomas/projets/buildroot/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/include \
+  -I/home/thomas/projets/buildroot/output/build/python-2.7.6/Include \
+  -I/home/thomas/projets/buildroot/output/build/python-2.7.6 \
+  -c /home/thomas/projets/buildroot/output/build/python-2.7.6/Modules/mathmodule.c \
+  -o build/temp.linux2-arm-2.7/home/thomas/projets/buildroot/output/build/python-2.7.6/Modules/mathmodule.o
+cc1: warning: include location "/usr/include" is unsafe for cross-compilation [-Wpoison-system-directories]
+[...]
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ setup.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/setup.py b/setup.py
+index 54054c2..64001e2 100644
+--- a/setup.py
++++ b/setup.py
+@@ -496,7 +496,7 @@ class PyBuildExt(build_ext):
+                     for directory in reversed(options.dirs):
+                         add_dir_to_list(dir_list, directory)
+ 
+-        if os.path.normpath(sys.prefix) != '/usr' \
++        if False and os.path.normpath(sys.prefix) != '/usr' \
+                 and not sysconfig.get_config_var('PYTHONFRAMEWORK'):
+             # OSX note: Don't add LIBDIR and INCLUDEDIR to building a framework
+             # (PYTHONFRAMEWORK is set) to avoid # linking problems when
+-- 
+2.7.4
+