package_manager.py: move multilib prefix list computation function to RpmIndexer
Since the code from anonymous function in rootfs_rpm.bbclass has been
removed, MULTILIB_PREFIX_LIST variable was never set. Hence not all
directories got indexed.
This commit will move the multilib prefix list computation function from
RpmPM class to RpmIndexer, since the indexer needs it too. I was hoping
to avoid this but, unfortunately, I couldn't.
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
