rockchip_soc_system_off() and rockchip_soc_soft_reset() are broken if board doesn't have poweroff and reset GPIOs since c1185ffde17c ("plat/rockchip: Switch to use new common BL aux parameter library").
plat_get_rockchip_gpio_reset() and plat_get_rockchip_gpio_poweroff() alwasy return non-NULL pointers.