python-cffi: update to latest version

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python-cffi/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=cffi
-PKG_VERSION:=1.3.1
+PKG_VERSION:=1.4.2
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://pypi.python.org/packages/source/c/cffi
-PKG_MD5SUM:=deeba7c1fd32a66f1db587988d760c11
+PKG_MD5SUM:=81357fe5042d00650b85b728cc181df2
 
 PKG_BUILD_DEPENDS:=python python-setuptools
 HOST_BUILD_DEPENDS:=libffi/host python/host python-setuptools/host python-pycparser/host