Fix links for cpio and tar

Default installation path for bsdcpio and bsdtar is /usr/bin, not it /bin, which causes links to be invalid on setups that don't use merged-usr.

Fix links to work properly on all the setups.

https://phabricator.apertis.org/T8146

Signed-off-by: Walter Lozano walter.lozano@collabora.com