airo: make strings const

Make read/only data structures const. Compile tested only.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/airo.c

@@ -105,7 +105,7 @@ static struct pci_driver airo_driver = {
    of statistics in the /proc filesystem */
 
 #define IGNLABEL(comment) NULL
-static char *statsLabels[] = {
+static const char *statsLabels[] = {
 	"RxOverrun",
 	IGNLABEL("RxPlcpCrcErr"),
 	IGNLABEL("RxPlcpFormatErr"),
@@ -932,7 +932,7 @@ typedef struct aironet_ioctl {
 	unsigned char __user *data;	// d-data
 } aironet_ioctl;
 
-static char swversion[] = "2.1";
+static const char swversion[] = "2.1";
 #endif /* CISCO_EXT */
 
 #define NUM_MODULES       2
@@ -1374,7 +1374,7 @@ static int micsetup(struct airo_info *ai) {
 	return SUCCESS;
 }
 
-static char micsnap[] = {0xAA,0xAA,0x03,0x00,0x40,0x96,0x00,0x02};
+static const u8 micsnap[] = {0xAA,0xAA,0x03,0x00,0x40,0x96,0x00,0x02};
 
 /*===========================================================================
  * Description: Mic a packet
@@ -5024,7 +5024,7 @@ static void proc_config_on_close(struct inode *inode, struct file *file)
 	airo_config_commit(dev, NULL, NULL, NULL);
 }
 
-static char *get_rmode(__le16 mode)
+static const char *get_rmode(__le16 mode)
 {
         switch(mode & RXMODE_MASK) {
         case RXMODE_RFMON:  return "rfmon";