Bump buidlroot version to 2018.02.6

bsp/buildroot/package/python-lxml/Config.in.host

@@ -0,0 +1,7 @@
+config BR2_PACKAGE_HOST_PYTHON_LXML
+	bool "host python-lxml"
+	help
+	  The lxml XML toolkit is a Pythonic binding for the C libraries
+	  libxml2 and libxslt.
+
+	  http://lxml.de/

bsp/buildroot/package/python-lxml/python-lxml.hash

@@ -1,2 +1,2 @@
 # Locally computed
-sha256  59d9176360dbc3919e9d4bfca85c1ca64ab4f4ee00e6f119d7150ba887e3410a  lxml-3.7.2.tgz
+sha256  f7bc9f702500e205b1560d620f14015fec76dcd6f9e889a946a2ddcc3c344fd0  lxml-4.0.0.tgz

bsp/buildroot/package/python-lxml/python-lxml.mk

@@ -4,12 +4,12 @@
 #
 ################################################################################
 
-PYTHON_LXML_VERSION = 3.7.2
+PYTHON_LXML_VERSION = 4.0.0
 PYTHON_LXML_SITE = http://lxml.de/files
 PYTHON_LXML_SOURCE = lxml-$(PYTHON_LXML_VERSION).tgz
 
 # Not including the GPL, because it is used only for the test scripts.
-PYTHON_LXML_LICENSE = BSD-3c, Others
+PYTHON_LXML_LICENSE = BSD-3-Clause, Others
 PYTHON_LXML_LICENSE_FILES = \
 	LICENSES.txt \
 	doc/licenses/BSD.txt \
@@ -21,11 +21,16 @@ PYTHON_LXML_LICENSE_FILES = \
 PYTHON_LXML_SETUP_TYPE = setuptools
 
 PYTHON_LXML_DEPENDENCIES = libxml2 libxslt zlib
+HOST_PYTHON_LXML_DEPENDENCIES = host-libxml2 host-libxslt host-zlib
 
 # python-lxml needs these scripts in order to properly detect libxml2 and
 # libxslt compiler and linker flags
 PYTHON_LXML_BUILD_OPTS = \
 	--with-xslt-config=$(STAGING_DIR)/usr/bin/xslt-config \
 	--with-xml2-config=$(STAGING_DIR)/usr/bin/xml2-config
+HOST_PYTHON_LXML_BUILD_OPTS = \
+	--with-xslt-config=$(HOST_DIR)/bin/xslt-config \
+	--with-xml2-config=$(HOST_DIR)/bin/xml2-config
 
 $(eval $(python-package))
+$(eval $(host-python-package))