tty: Use the generic RS485 ioctl on CRIS

Use the new general RS485 Linux data structure (introduced by Alan with
commit number c26c56c0f40e200e61d1390629c806f6adaffbcc) in the Cris
architecture too (currently, Cris still uses the old private data
structure instead of the new one).

Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Tested-by: Hinko Kocevar <hinko.kocevar@cetrtapot.si>
Tested-by: Janez Cufer <janez.cufer@cetrtapot.si>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/serial/crisv10.h b/drivers/serial/crisv10.h
index f36a729..ea0beb46 100644
--- a/drivers/serial/crisv10.h
+++ b/drivers/serial/crisv10.h
@@ -125,7 +125,7 @@
 	int errorcode;
 
 #ifdef CONFIG_ETRAX_RS485
-	struct rs485_control	rs485;  /* RS-485 support */
+	struct serial_rs485	rs485;  /* RS-485 support */
 #endif
 };