dm: core: Provide ofnode_name_eq_unit() to accept a unit address

When a unit-address is provided, use it to match against the node
name.

Since this increases code size, put it into a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/dm/ofnode.h

@@ -394,6 +394,20 @@ void oftree_dispose(oftree tree);
  */
 bool ofnode_name_eq(ofnode node, const char *name);
 
+/**
+ * ofnode_name_eq_unit() - Check a node name ignoring its unit address
+ *
+ * This is separate from ofnode_name_eq() to avoid code-size increase for
+ * boards which don't need this function
+ *
+ * @node:	valid node to compared, which may have a unit address
+ * @name:	name to compare with the node name. If this contains a unit
+ *		address, it is matched, otherwise the unit address is ignored
+ *		when searching for matches
+ * Return: true if matches, false if it doesn't match
+ */
+bool ofnode_name_eq_unit(ofnode node, const char *name);
+
 /**
  * ofnode_read_u8() - Read a 8-bit integer from a property
  *