staging: ozwpan: Mark string as const

Make sure that we mark const string so that it does not get modified.

Signed-off-by: Rupesh Gujare <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/ozwpan/ozproto.c b/drivers/staging/ozwpan/ozproto.c
index 500800f..2dbaba6 100644
--- a/drivers/staging/ozwpan/ozproto.c
+++ b/drivers/staging/ozwpan/ozproto.c
@@ -636,7 +636,7 @@
 /*------------------------------------------------------------------------------
  * Context: process
  */
-void oz_binding_add(char *net_dev)
+void oz_binding_add(const char *net_dev)
 {
 	struct oz_binding *binding;
 
@@ -669,7 +669,7 @@
 /*------------------------------------------------------------------------------
  * Context: process
  */
-static int compare_binding_name(char *s1, char *s2)
+static int compare_binding_name(const char *s1, const char *s2)
 {
 	int i;
 	for (i = 0; i < OZ_MAX_BINDING_LEN; i++) {
@@ -707,7 +707,7 @@
 /*------------------------------------------------------------------------------
  * Context: process
  */
-void oz_binding_remove(char *net_dev)
+void oz_binding_remove(const char *net_dev)
 {
 	struct oz_binding *binding;
 	int found = 0;