ipmi: Move the address source to string to ipmi-generic code

It was in the system interface driver, but is generic functionality.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index f816211..e5d7c0b 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -474,6 +474,18 @@
 #define ipmi_get_stat(intf, stat) \
 	((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat]))
 
+static char *addr_src_to_str[] = { "invalid", "hotmod", "hardcoded", "SPMI",
+				   "ACPI", "SMBIOS", "PCI",
+				   "device-tree", "default" };
+
+const char *ipmi_addr_src_to_str(enum ipmi_addr_src src)
+{
+	if (src > SI_DEFAULT)
+		src = 0; /* Invalid */
+	return addr_src_to_str[src];
+}
+EXPORT_SYMBOL(ipmi_addr_src_to_str);
+
 static int is_lan_addr(struct ipmi_addr *addr)
 {
 	return addr->addr_type == IPMI_LAN_ADDR_TYPE;
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 8747119..337182b 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -111,10 +111,6 @@
 };
 static char *si_to_str[] = { "kcs", "smic", "bt" };
 
-static char *ipmi_addr_src_to_str[] = { NULL, "hotmod", "hardcoded", "SPMI",
-					"ACPI", "SMBIOS", "PCI",
-					"device-tree", "default" };
-
 #define DEVICE_NAME "ipmi_si"
 
 static struct platform_driver ipmi_driver;
@@ -3279,8 +3275,8 @@
 	int rv = 0;
 
 	printk(KERN_INFO PFX "Adding %s-specified %s state machine",
-			ipmi_addr_src_to_str[new_smi->addr_source],
-			si_to_str[new_smi->si_type]);
+	       ipmi_addr_src_to_str(new_smi->addr_source),
+	       si_to_str[new_smi->si_type]);
 	mutex_lock(&smi_infos_lock);
 	if (!is_new_interface(new_smi)) {
 		printk(KERN_CONT " duplicate interface\n");
@@ -3310,7 +3306,7 @@
 	printk(KERN_INFO PFX "Trying %s-specified %s state"
 	       " machine at %s address 0x%lx, slave address 0x%x,"
 	       " irq %d\n",
-	       ipmi_addr_src_to_str[new_smi->addr_source],
+	       ipmi_addr_src_to_str(new_smi->addr_source),
 	       si_to_str[new_smi->si_type],
 	       addr_space_to_str[new_smi->io.addr_type],
 	       new_smi->io.addr_data,