drm: move drm_stub.c to drm_drv.c

Everyone agrees we should do this,

Acked-by: Daniel Vetter <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Acked-by: David Herrmann <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

drivers/gpu/drm/Makefile

@@ -7,7 +7,7 @@ ccflags-y := -Iinclude/drm
 drm-y       :=	drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \
 		drm_context.o drm_dma.o \
 		drm_fops.o drm_gem.o drm_ioctl.o drm_irq.o \
-		drm_lock.o drm_memory.o drm_stub.o drm_vm.o \
+		drm_lock.o drm_memory.o drm_drv.o drm_vm.o \
 		drm_agpsupport.o drm_scatter.o drm_pci.o \
 		drm_platform.o drm_sysfs.o drm_hashtab.o drm_mm.o \
 		drm_crtc.o drm_modes.o drm_edid.o \