mii-tool: fix variable being declared too early

Signed-off-by: Stijn Segers <francesco.borromini@inventati.org>

net/mii-tool/Makefile

@@ -10,12 +10,12 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=mii-tool
 PKG_VERSION=2016-07-10-$(PKG_SOURCE_VERSION)
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_LICENSE:=GPL-2.0
 PKG_MAINTAINER:=Stijn Segers <borromini.reg@protonmail.com>
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://git.code.sf.net/p/net-tools/code
-PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_SUBDIR=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_VERSION:=115f1af2494ded1fcd21c8419d5e289bc4df380f
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz