node: add a python/host dependency

Signed-off-by: John Crispin <blogic@openwrt.org>

lang/node/Makefile

@@ -14,6 +14,7 @@ PKG_RELEASE:=1
 PKG_SOURCE:=node-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://nodejs.org/dist/${PKG_VERSION}
 
+PKG_BUILD_DEPENDS:=python/host
 PKG_INSTALL:=1
 
 PKG_MAINTAINER:=John Crispin <blogic@openwrt.org>