BB: build: fix removal of old .ipk files with CONFIG_PER_FEED_REPO

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

Backport of r42090

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42091 3c298f89-4303-0410-b956-a3cf2f4a3e73

include/package-ipkg.mk

@@ -136,7 +136,7 @@ ifeq ($(DUMP),)
 
     $(PKG_INFO_DIR)/$(1).provides: $$(IPKG_$(1))
     $$(IPKG_$(1)): $(STAMP_BUILT) $(INCLUDE_DIR)/package-ipkg.mk
-	@rm -rf $(PACKAGE_DIR)/$(1)_* $$(IDIR_$(1))
+	@rm -rf $$(PDIR_$(1))/$(1)_* $$(IDIR_$(1))
 	mkdir -p $(PACKAGE_DIR) $$(IDIR_$(1))/CONTROL $(PKG_INFO_DIR)
 	$(call Package/$(1)/install,$$(IDIR_$(1)))
 	-find $$(IDIR_$(1)) -name 'CVS' -o -name '.svn' -o -name '.#*' -o -name '*~'| $(XARGS) rm -rf