chkconfig-alternatives-native: just append to PROVIDES

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
eglibc: move RPROVIDES to eglibc-package

* PROVIDES_${PN}-dbg doesn't look correct, it should be RPROVIDES
  and that was already in eglibc-package
* RPROVIDES_${PN}-dev was overwritten in eglibc-package, but add
  those 2 entries now

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>