build: only print skipped packages that were selected

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43023 3c298f89-4303-0410-b956-a3cf2f4a3e73

include/package-ipkg.mk

@@ -109,7 +109,7 @@ ifeq ($(DUMP),)
 			echo "$(1)" >> $(PKG_INSTALL_STAMP)
         endif
       else
-        $$(info WARNING: skipping $(1) -- package not selected)
+        $(if $(CONFIG_PACKAGE_$(1)),$$(info WARNING: skipping $(1) -- package not selected))
       endif
     endif
     endif