[PATCH v3 2/5] RISC-V: Move to the new GENERIC_IRQ_MULTI_HANDLER handler

The old mechanism for handling IRQs on RISC-V was pretty ugly: the arch code looked at the Kconfig entry for our first-level irqchip driver and called into it directly. This patch uses the new generic IRQ handling infastructure, which essentially just deletes a bunch of code. This does add an

[PATCH v3 2/5] RISC-V: Move to the new GENERIC_IRQ_MULTI_HANDLER handler

The old mechanism for handling IRQs on RISC-V was pretty ugly: the arch code looked at the Kconfig entry for our first-level irqchip driver and called into it directly. This patch uses the new generic IRQ handling infastructure, which essentially just deletes a bunch of code. This does add an