[CORE] vmm_host_irq: Rename VMM_ROUTED_IRQ_xxx to VMM_ROUTED_IRQ_STATE_xxx

This patch renames VMM_ROUTED_IRQ_xxx to VMM_ROUTED_IRQ_STATE_xxx
for better readablity.

Signed-off-by: Anup Patel <anup@brainfault.org>