native: Improve PROVIDES handling

native: Improve PROVIDES handling

Since this class works on pre finalised data, the logic hasn't needed
to be exact. If we change the way the finalised data works, we find
that certain dependencies can be dropped (e.g. pn isn't in the name).

To fix this, restructure the function to alter each entry in turn
and not drop any entries.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>