[PATCH V9 1/8] irqchip: add C-SKY SMP interrupt controller

- Irq-csky-mpintc is C-SKY smp system interrupt controller and it could support 16 soft irqs, 16 private irqs, and 992 max common irqs. Changelog: - Move IPI_IRQ into the driver - Remove irq_set_default_host() and use set_ipi_irq_mapping() - Change name with upstream feed-back - Change

[PATCH V9 1/8] irqchip: add C-SKY SMP interrupt controller

- Irq-csky-mpintc is C-SKY smp system interrupt controller and it could support 16 soft irqs, 16 private irqs, and 992 max common irqs. Changelog: - Move IPI_IRQ into the driver - Remove irq_set_default_host() and use set_ipi_irq_mapping() - Change name with upstream feed-back - Change