drivers/gpio/gpio-em.c build error if CONFIG_GPIO_EM=m

Hi Magnus,
I got below build error if CONFIG_GPIO_EM=m

MODPOST 33 modules
ERROR: "set_irq_flags" [drivers/gpio/gpio-em.ko] undefined! make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

Regards,
Axel