Introduce an interrupt controller driver for Realtek DHC (Digital Home Center) SoCs.

Change log:
v1 -> v2:
- Tested the bindings using 'make dt_binding_check'
- Fixed code style issues
- Resolved kernel test robot build warnings
- Replaced spin_lock_irqsave with raw_spin_lock
- Replaced magic number with macro
- Removed the realtek_intc_set_affinity function

James Tai (6):
  dt-bindings: interrupt-controller: Add support for Realtek DHC SoCs
  irqchip: Add interrupt controller support for Realtek DHC SoCs
  irqchip: Introduce RTD1319 support using the Realtek common interrupt
    controller driver
  irqchip: Introduce RTD1319D support using the Realtek common interrupt
    controller driver
  irqchip: Introduce RTD1325 support using the Realtek common interrupt
    controller driver
  irqchip: Introduce RTD1619B support using the Realtek common interrupt
    controller driver

 .../realtek,rtd1319-intc.yaml                 |  79 ++++++
 .../realtek,rtd1319d-intc.yaml                |  79 ++++++
 .../realtek,rtd1325-intc.yaml                 |  79 ++++++
 .../realtek,rtd1619b-intc.yaml                |  78 ++++++
 drivers/irqchip/Kconfig                       |  28 +++
 drivers/irqchip/Makefile                      |   5 +
 drivers/irqchip/irq-realtek-intc-common.c     | 192 +++++++++++++++
 drivers/irqchip/irq-realtek-intc-common.h     |  77 ++++++
 drivers/irqchip/irq-realtek-rtd1319.c         | 218 +++++++++++++++++
 drivers/irqchip/irq-realtek-rtd1319d.c        | 227 ++++++++++++++++++
 drivers/irqchip/irq-realtek-rtd1325.c         | 227 ++++++++++++++++++
 drivers/irqchip/irq-realtek-rtd1619b.c        | 217 +++++++++++++++++
 12 files changed, 1506 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/realtek,rtd1319-intc.yaml
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/realtek,rtd1319d-intc.yaml
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/realtek,rtd1325-intc.yaml
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/realtek,rtd1619b-intc.yaml
 create mode 100644 drivers/irqchip/irq-realtek-intc-common.c
 create mode 100644 drivers/irqchip/irq-realtek-intc-common.h
 create mode 100644 drivers/irqchip/irq-realtek-rtd1319.c
 create mode 100644 drivers/irqchip/irq-realtek-rtd1319d.c
 create mode 100644 drivers/irqchip/irq-realtek-rtd1325.c
 create mode 100644 drivers/irqchip/irq-realtek-rtd1619b.c

-- 
2.25.1