autopkg: fix paths used to include common parts of scripts

helpers/autopkg/autopkg-branch.mk

 # Autopkg tracking given branch
 AUTOPKG_VARIANT:=branch
-include $(TOPDIR)/feeds/personal/autopkg-head.mk
+include $(INCLUDE_DIR)/autopkg-head.mk
 
 ifndef PKG_SOURCE_BRANCH
 $(error You have to define PKG_SOURCE_BRANCH before pkgauto.mk include)
@@ -21,4 +21,4 @@ PKG_RELEASE:=$(shell git $(GIT_ARGS) rev-list --count "$(PKG_VERSION)..$(PKG_SOU
 PKG_VERSION:=$(PKG_VERSION:v%=%).9999
 endif
 
-include $(TOPDIR)/feeds/personal/autopkg-tail.mk
+include $(INCLUDE_DIR)/autopkg-tail.mk

helpers/autopkg/autopkg-tag.mk

 # Autopkg tracking latest version tag
 AUTOPKG_VARIANT:=tag
-include $(TOPDIR)/feeds/personal/autopkg-head.mk
+include $(INCLUDE_DIR)/autopkg-head.mk
 
 ifeq ($(PKG_SOURCE_ALL_TAGS),y)
 PKG_SOURCE_VERSION:=$(shell git $(GIT_ARGS) tag | sort -V | tail -1)
@@ -10,4 +10,4 @@ PKG_SOURCE_VERSION:=$(shell git $(GIT_ARGS) tag | grep '^v' | sort -V | tail -1)
 PKG_VERSION:=$(subst v%,%,$(PKG_SOURCE_VERSION))
 endif
 
-include $(TOPDIR)/feeds/personal/autopkg-tail.mk
+include $(INCLUDE_DIR)/autopkg-tail.mk