Merge branch irq/irqchip-driver-updates into irq/irqchip-next

Various minor irqchip driver updates:

- QC PDC now compiles as a module
- HiSilicon MBIGEN fix for compile-time warning when !ACPI

* irq/irqchip-driver-updates:
  irqchip/mbigen: Fix compile warning when CONFIG_ACPI is disabled
  irqchip/qcom-pdc: Switch to IRQCHIP_PLATFORM_DRIVER and allow as a module