Adds the sorting function to cover the case where you have more IRQs
to consider than you have LRs. We now consider priorities.
Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Reviewed-by: NEric Auger <eric.auger@linaro.org>
Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com>