LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist

LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist

After commit 7c405fb3279b3924 ("rcu: Use an intermediate irq_work to
start process_srcu()"), Loongson-2K0300/2K0500 fail to boot. Because
IRQ_WORK need IPI but Loongson-2K0300/2K0500 don't have IPI HW.

So make arch_irq_work_has_interrupt() return true only if IPI HW exist.

Cc: stable@vger.kernel.org
Reported-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>