manifests: add ppc64le packages to detect dynamically attached devices

While running the Openshift CI encountered: https://bugzilla.redhat.com/show_bug.cgi?id=1811537
which requires some extra ppc64le libraries required to detect dynamically attached pci devices.
These devices show up through the diag events which is why the diag libraries are necessary

manifests/fedora-coreos-base.yaml

@@ -165,6 +165,9 @@ packages-x86_64:
   - irqbalance
 packages-ppc64le:
   - irqbalance
+  - librtas
+  - powerpc-utils-core
+  - ppc64-diag-rtas
 packages-aarch64:
   - irqbalance
 

overlay.d/05core/usr/lib/systemd/system-preset/40-coreos.preset

@@ -22,3 +22,7 @@ enable zincati.service
 enable coreos-liveiso-success.service
 # See bootupd.yaml
 enable bootupd.socket
+# Enable rtas_errd for ppc64le to discover dynamically attached pci devices - https://bugzilla.redhat.com/show_bug.cgi?id=1811537
+# The event for the attached device comes as a diag event.
+# Ideally it should have been added as part of base Fedora - but since it was arch specific, it was not added: https://bugzilla.redhat.com/show_bug.cgi?id=1433859
+enable rtas_errd.service