Change conditional to search for 'Intel'

Changes the conditional to search for 'Intel' in the
ansible_facts.processor variable as the first item in the list is not
always consistent.

roles/iommu/tasks/main.yml

@@ -7,7 +7,7 @@
       - intel_iommu=on
     kernel_cmdline_remove: # noqa: var-naming[no-role-prefix]
       - ^intel_iommu=
-  when: "'Intel' in ansible_facts.processor.0"
+  when: ansible_facts.processor | select('search', 'Intel') | list | length > 0
 
 - name: Set iommu=pt
   ansible.builtin.include_role: