[PATCH RESEND v3 1/3] irqchip: vf610-mscm: add support for MSCM interrupt router

This adds support for Vybrid's interrupt router. On VF6xx models, almost all peripherals can be accessed from either of the two CPU's, from the Cortex-A5 or from the Cortex-M4. The interrupt router routes the peripheral interrupts to the configured CPU. The driver makes use of the irqdomain

[PATCH RESEND v3 1/3] irqchip: vf610-mscm: add support for MSCM interrupt router

This adds support for Vybrid's interrupt router. On VF6xx models, almost all peripherals can be accessed from either of the two CPU's, from the Cortex-A5 or from the Cortex-M4. The interrupt router routes the peripheral interrupts to the configured CPU. The driver makes use of the irqdomain