[ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion

Patch from Lennert Buytenhek

Add a PLAT8250_DEV_PLATFORM2, and convert the two ixdp2x01 CPLD serial
ports to use platform serial devices with ids PLAT8250_DEV_PLATFORM[12].
(The on-chip xscale UART is PLAT8250_DEV_PLATFORM, id #0.)

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 73b464f..8e96814 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -37,6 +37,7 @@
 	PLAT8250_DEV_LEGACY = -1,
 	PLAT8250_DEV_PLATFORM,
 	PLAT8250_DEV_PLATFORM1,
+	PLAT8250_DEV_PLATFORM2,
 	PLAT8250_DEV_FOURPORT,
 	PLAT8250_DEV_ACCENT,
 	PLAT8250_DEV_BOCA,