package/python-typing: add host variant

host-python-typing is needed for mongodb 4.0.6

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python-typing/python-typing.mk

@@ -12,3 +12,4 @@ PYTHON_TYPING_LICENSE = Python-2.0, others
 PYTHON_TYPING_LICENSE_FILES = LICENSE
 
 $(eval $(python-package))
+$(eval $(host-python-package))