[SERIAL] 8250: constify some serial structs

- some const- ification and usage of ARRAY_SIZE() in serial drivers
Signed-off-by: NHelge Deller <deller@gmx.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

drivers/serial/8250_pci.c

@@ -458,11 +458,11 @@ static int pci_siig_setup(struct serial_private *priv,
  * growing *huge*, we use this function to collapse some 70 entries
  * in the PCI table into one, for sanity's and compactness's sake.
  */
-static unsigned short timedia_single_port[] = {
+static const unsigned short timedia_single_port[] = {
 	0x4025, 0x4027, 0x4028, 0x5025, 0x5027, 0
 };
 
-static unsigned short timedia_dual_port[] = {
+static const unsigned short timedia_dual_port[] = {
 	0x0002, 0x4036, 0x4037, 0x4038, 0x4078, 0x4079, 0x4085,
 	0x4088, 0x4089, 0x5037, 0x5078, 0x5079, 0x5085, 0x6079, 
 	0x7079, 0x8079, 0x8137, 0x8138, 0x8237, 0x8238, 0x9079, 
@@ -470,35 +470,34 @@ static unsigned short timedia_dual_port[] = {
 	0xD079, 0
 };
 
-static unsigned short timedia_quad_port[] = {
+static const unsigned short timedia_quad_port[] = {
 	0x4055, 0x4056, 0x4095, 0x4096, 0x5056, 0x8156, 0x8157, 
 	0x8256, 0x8257, 0x9056, 0x9156, 0x9157, 0x9158, 0x9159, 
 	0x9256, 0x9257, 0xA056, 0xA157, 0xA158, 0xA159, 0xB056,
 	0xB157, 0
 };
 
-static unsigned short timedia_eight_port[] = {
+static const unsigned short timedia_eight_port[] = {
 	0x4065, 0x4066, 0x5065, 0x5066, 0x8166, 0x9066, 0x9166, 
 	0x9167, 0x9168, 0xA066, 0xA167, 0xA168, 0
 };
 
 static const struct timedia_struct {
 	int num;
-	unsigned short *ids;
+	const unsigned short *ids;
 } timedia_data[] = {
 	{ 1, timedia_single_port },
 	{ 2, timedia_dual_port },
 	{ 4, timedia_quad_port },
-	{ 8, timedia_eight_port },
-	{ 0, NULL }
+	{ 8, timedia_eight_port }
 };
 
 static int pci_timedia_init(struct pci_dev *dev)
 {
-	unsigned short *ids;
+	const unsigned short *ids;
 	int i, j;
 
-	for (i = 0; timedia_data[i].num; i++) {
+	for (i = 0; i < ARRAY_SIZE(timedia_data); i++) {
 		ids = timedia_data[i].ids;
 		for (j = 0; ids[j]; j++)
 			if (dev->subsystem_device == ids[j])