python-six: add python3 variant for host install

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

lang/python/python-six/Makefile

@@ -21,7 +21,7 @@ PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=LICENSE
 PKG_MAINTAINER:=Jeffery To <jeffery.to@gmail.com>, Alexandru Ardelean <ardeleanalex@gmail.com>
 
-HOST_BUILD_DEPENDS:=python/host
+HOST_BUILD_DEPENDS:=python/host python3/host
 
 include $(INCLUDE_DIR)/host-build.mk
 include $(INCLUDE_DIR)/package.mk
@@ -66,6 +66,7 @@ endef
 
 define Host/Compile
 	$(call Build/Compile/HostPyMod,,install --prefix="" --root="$(STAGING_DIR_HOSTPKG)")
+	$(call Build/Compile/HostPy3Mod,,install --prefix="" --root="$(STAGING_DIR_HOSTPKG)")
 endef
 
 Host/Install:=