Split kmod-nf-nathelper-extra into separate helper packages
and keep the original package as a compatibility meta-package.
This allows selecting only the required protocol helpers
instead of installing all helper modules and dependencies.
Signed-off-by: Mieczyslaw Nalewaj <namiltd@yahoo.com>
Link: https://github.com/openwrt/openwrt/pull/23690
Signed-off-by: Robert Marko <robimarko@gmail.com>