TTY: switch tty_insert_flip_char

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_char is the next one to proceed. This one is used all
over the code, so the patch is huge.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c
index e9fc15f..c70144f 100644
--- a/drivers/tty/isicom.c
+++ b/drivers/tty/isicom.c
@@ -634,7 +634,7 @@
 			break;
 
 		case 1:	/* Received Break !!! */
-			tty_insert_flip_char(tty, 0, TTY_BREAK);
+			tty_insert_flip_char(&port->port, 0, TTY_BREAK);
 			if (port->port.flags & ASYNC_SAK)
 				do_SAK(tty);
 			tty_flip_buffer_push(tty);
@@ -658,7 +658,7 @@
 		insw(base, rp, word_count);
 		byte_count -= (word_count << 1);
 		if (count & 0x0001) {
-			tty_insert_flip_char(tty,  inw(base) & 0xff,
+			tty_insert_flip_char(&port->port, inw(base) & 0xff,
 				TTY_NORMAL);
 			byte_count -= 2;
 		}