[SERIAL] uart_port iotype member should use UPIO_*

Convert usage of SERIAL_IO_* to UPIO_*.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/serial/pmac_zilog.c

@@ -1492,7 +1492,7 @@ no_dma:
 	/*
 	 * Init remaining bits of "port" structure
 	 */
-	uap->port.iotype = SERIAL_IO_MEM;
+	uap->port.iotype = UPIO_MEM;
 	uap->port.irq = np->intrs[0].line;
 	uap->port.uartclk = ZS_CLOCK;
 	uap->port.fifosize = 1;