hw/intc/loongarch_pch: Add reset support

Add reset support with LoongArch pci irqchip, and register reset
callback support with new API resettable_class_set_parent_phases().
Clear internal HW registers and SW state when virt machine resets.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
2 files changed