irq-urgent-2023-03-05

  - Prevent possible NULL pointer derefences in irq_data_get_affinity_mask()
    and irq_domain_create_hierarchy().

  - Take the per device MSI lock before invoking code which relies
    on it being hold.

  - Make sure that MSI descriptors are unreferenced before freeing
    them. This was overlooked when the platform MSI code was converted to
    use core infrastructure and results in a fals positive warning.

  - Remove dead code in the MSI subsystem.

  - Clarify the documentation for pci_msix_free_irq().

  - More kobj_type constification.