TTY: switch tty_insert_flip_string

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_string this time.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index e4eb81a..cb787c0 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -133,7 +133,7 @@
 			port->icount.frame++;
 
 		/* TODO: handle sysrq */
-		tty_insert_flip_string(tty, (char *) &c,
+		tty_insert_flip_string(tport, (char *)&c,
 				       (count > 4) ? 4 : count);
 		count -= 4;
 	}