virtio/virtcons: fix section mismatch warning

Make virtcons_probe() __devinit.
Fixes this section warning:

WARNING: vmlinux.o(.text+0x14c10b): Section mismatch: reference to .init.text:hvc_alloc (between 'virtcons_probe' and 'ac_register_board')
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/char/virtio_console.c

@@ -141,7 +141,7 @@ int __init virtio_cons_early_init(int (*put_chars)(u32, const char *, int))
  * never remove the console device we never need this pointer again.
  *
  * Finally we put our input buffer in the input queue, ready to receive. */
-static int virtcons_probe(struct virtio_device *dev)
+static int __devinit virtcons_probe(struct virtio_device *dev)
 {
 	int err;
 	struct hvc_struct *hvc;