kernel/irq: export irq_gc_set_wake

Module driver may use irq_gc_set_wake.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210305080658.2422114-1-jay.xu@rock-chips.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>