[M68KNOMMU]: use ARRAY_SIZE in ColdFire serial driver

[Greg Ungerer]

Use ARRAY_SIZE macroto get maximum ports in ColdFire serial driver.

Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxx>
---

diff -Naurp linux-2.6.23-rc1/drivers/serial/mcf.c linux-2.6.23-rc1.platform/drivers/serial/mcf.c
--- linux-2.6.23-rc1/drivers/serial/mcf.c	2007-10-25 10:49:13.000000000 +1000
+++ linux-2.6.23-rc1.platform/drivers/serial/mcf.c	2007-10-30 11:18:30.000000000 +1000
@@ -434,7 +434,7 @@ static struct uart_ops mcf_uart_ops = {
 
 static struct mcf_uart mcf_ports[3];
 
-#define	MCF_MAXPORTS	(sizeof(mcf_ports) / sizeof(struct mcf_uart))
+#define	MCF_MAXPORTS	ARRAY_SIZE(mcf_ports)
 
 /****************************************************************************/
 #if defined(CONFIG_SERIAL_MCF_CONSOLE)
-
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