Update iommu role for rl9

Author: technowhizz

roles/iommu/tasks/main.yml

@@ -3,11 +3,11 @@
   ansible.builtin.include_role:
     name: stackhpc.linux.grubcmdline
   vars:
-    kernel_cmdline: # noqa: var-naming[no-role-prefix]
-      - intel_iommu=on
+    kernel_cmdline: "{{ ['intel_iommu=on'] + (['vfio-pci.ids=' + vfio_pci_ids] if vfio_pci_ids is defined else []) }}"  # noqa: var-naming[no-role-prefix]
     kernel_cmdline_remove: # noqa: var-naming[no-role-prefix]
       - ^intel_iommu=
-  when: "'Intel' in ansible_facts.processor.0"
+      - ^vfio-pci\.ids=
+  when: ansible_facts.processor | select('search', 'Intel') | list | length > 0
 
 - name: Set iommu=pt
   ansible.builtin.include_role: