Merge branch irq/gicv3-eppi-partition into irq/irqchip-next

- Add support for partitionned EPPIs, modeled after the existing
  partitioned PPI support

* irq/gicv3-eppi-partition:
  irqchip/gic-v3: Fix selection of partition domain for EPPIs
  irqchip/gic-v3: Add __gic_get_ppi_index() to find the PPI number from hwirq

Signed-off-by: Marc Zyngier <maz@kernel.org>