randconfig build error with next-20141001, in drivers/gpu/drm/i915

Building with the attached random configuration file,

warning: (VIDEO_TIMBERDALE) selects TIMB_DMA which has unmet direct dependencies (DMADEVICES && MFD_TIMBERDALE) warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG which has unmet direct dependencies (USB_SUPPORT && USB && PM_RUNTIME)

drivers/built-in.o: In function `intel_panel_setup_backlight': (.text+0x11855d): undefined reference to `backlight_device_register' drivers/built-in.o: In function `intel_panel_destroy_backlight': (.text+0x118624): undefined reference to `backlight_device_unregister' make: *** [vmlinux] Error 1