drm: remove drm_init.c it is no longer needed

Move drm_cpu_valid into drm_fops.c

Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/Makefile b/drivers/char/drm/Makefile
index e41060c..f1898cd 100644
--- a/drivers/char/drm/Makefile
+++ b/drivers/char/drm/Makefile
@@ -3,7 +3,7 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 drm-objs    :=	drm_auth.o drm_bufs.o drm_context.o drm_dma.o drm_drawable.o \
-		drm_drv.o drm_fops.o drm_init.o drm_ioctl.o drm_irq.o \
+		drm_drv.o drm_fops.o drm_ioctl.o drm_irq.o \
 		drm_lock.o drm_memory.o drm_proc.o drm_stub.o drm_vm.o \
 		drm_agpsupport.o drm_scatter.o ati_pcigart.o drm_pci.o \
 		drm_sysfs.o