bcrypt: add python-cffi/host build dependency

Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>

lang/python/bcrypt/Makefile

@@ -19,6 +19,10 @@ PKG_MAINTAINER:=Daniel Dickinson <cshored@thecshore.com>
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(BUILD_VARIANT)-bcrypt-$(PKG_VERSION)
 
+PKG_BUILD_DEPENDS:=libffi/host
+HOST_PYTHON_PACKAGE_BUILD_DEPENDS:="cffi>=1.1"
+HOST_PYTHON3_PACKAGE_BUILD_DEPENDS:="cffi>=1.1"
+
 include $(INCLUDE_DIR)/package.mk
 
 include ../python-package.mk