of: fix htmldocs build warnings

Fix these htmldoc build warnings:

include/linux/of.h:115: warning: cannot understand function prototype: 'const struct kobj_type of_node_ktype; '
include/linux/of.h:118: warning: Excess function parameter 'phandle_name' description in 'of_node_init'
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: d9194e00 ("of: dynamic: add lifecycle docbook info to node creation functions")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20230322180032.1badd132@canb.auug.org.auSigned-off-by: Rob Herring <robh@kernel.org>

include/linux/of.h

@@ -96,10 +96,12 @@ struct of_reconfig_data {
 	struct property		*old_prop;
 };
 
+extern const struct kobj_type of_node_ktype;
+extern const struct fwnode_operations of_fwnode_ops;
+
 /**
  * of_node_init - initialize a devicetree node
  * @node: Pointer to device node that has been created by kzalloc()
- * @phandle_name: Name of property holding a phandle value
  *
  * On return the device_node refcount is set to one.  Use of_node_put()
  * on @node when done to free the memory allocated for it.  If the node
@@ -107,9 +109,6 @@ struct of_reconfig_data {
  * whether to free the memory will be done by node->release(), which is
  * of_node_release().
  */
-/* initialize a node */
-extern const struct kobj_type of_node_ktype;
-extern const struct fwnode_operations of_fwnode_ops;
 static inline void of_node_init(struct device_node *node)
 {
 #if defined(CONFIG_OF_KOBJ)