Fix compile errors in SGI console drivers (linux-next tree)

The below is the patch to replace blindly all possible places,
including Jack's fixes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
(Reviewed and checked rather than blindly added)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c
index da596e7..c9f53e7 100644
--- a/drivers/serial/mpsc.c
+++ b/drivers/serial/mpsc.c
@@ -932,7 +932,7 @@
 static int mpsc_rx_intr(struct mpsc_port_info *pi)
 {
 	struct mpsc_rx_desc *rxre;
-	struct tty_struct *tty = pi->port.info->tty;
+	struct tty_struct *tty = pi->port.info->port.tty;
 	u32	cmdstat, bytes_in, i;
 	int	rc = 0;
 	u8	*bp;