[SPARC/64]: constify of_get_property return

Finally, we actually change the functions themselves.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/prom.c

@@ -170,7 +170,7 @@ EXPORT_SYMBOL(of_find_property);
  * Find a property with a given name for a given node
  * and return the value.
  */
-void *of_get_property(struct device_node *np, const char *name, int *lenp)
+const void *of_get_property(struct device_node *np, const char *name, int *lenp)
 {
 	struct property *pp = of_find_property(np,name,lenp);
 	return pp ? pp->value : NULL;

arch/sparc64/kernel/prom.c

@@ -174,7 +174,7 @@ EXPORT_SYMBOL(of_find_property);
  * Find a property with a given name for a given node
  * and return the value.
  */
-void *of_get_property(struct device_node *np, const char *name, int *lenp)
+const void *of_get_property(struct device_node *np, const char *name, int *lenp)
 {
 	struct property *pp = of_find_property(np,name,lenp);
 	return pp ? pp->value : NULL;

include/asm-sparc/prom.h

@@ -89,7 +89,7 @@ extern struct property *of_find_property(struct device_node *np,
 					 const char *name,
 					 int *lenp);
 extern int of_device_is_compatible(struct device_node *device, const char *);
-extern void *of_get_property(struct device_node *node, const char *name,
+extern const void *of_get_property(struct device_node *node, const char *name,
 			     int *lenp);
 #define get_property(node,name,lenp) of_get_property(node,name,lenp)
 extern int of_set_property(struct device_node *node, const char *name, void *val, int len);

include/asm-sparc64/prom.h

@@ -97,8 +97,8 @@ extern struct property *of_find_property(struct device_node *np,
 					 const char *name,
 					 int *lenp);
 extern int of_device_is_compatible(struct device_node *device, const char *);
-extern void *of_get_property(struct device_node *node, const char *name,
-			     int *lenp);
+extern const void *of_get_property(struct device_node *node, const char *name,
+				   int *lenp);
 #define get_property(node,name,lenp) of_get_property(node,name,lenp)
 extern int of_set_property(struct device_node *node, const char *name, void *val, int len);
 extern int of_getintprop_default(struct device_node *np,