Add a new function irq_domain_translate_onecell() that is to be used as
the translate function in struct irq_domain_ops.
Signed-off-by: NYash Shah <yash.shah@sifive.com>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1575976274-13487-2-git-send-email-yash.shah@sifive.com