led_action        156 arch/powerpc/include/asm/opal.h int64_t opal_set_slot_led_status(uint64_t phb_id, uint64_t slot_id, uint8_t led_type, uint8_t led_action);
led_action        159 arch/powerpc/include/asm/opal.h int64_t opal_set_system_attention_led(uint8_t led_action);