kill drivers/net/net_init.c

After the last patch only three routines are left in this file, but all of the fir into net/core/dev.c much better:

- {un,}register_netdev are just wrappers around {un,}register_netdevice from dev.c
- alloc_netdev's counterpart, free_netdev is in dev.c aswell.

So move over the remaining contents and add some kerneldoc comments describing the functions.

@@ -66,7 +66,7 @@
 
 obj-$(CONFIG_SUNDANCE) += sundance.o
 obj-$(CONFIG_HAMACHI) += hamachi.o
-obj-$(CONFIG_NET) += Space.o net_init.o loopback.o
+obj-$(CONFIG_NET) += Space.o loopback.o
 obj-$(CONFIG_SEEQ8005) += seeq8005.o
 obj-$(CONFIG_ETHERTAP) += ethertap.o
 obj-$(CONFIG_NET_SB1000) += sb1000.o

Queued for 2.6.11, thanks Christoph.