Fix some typing errors in libfdt.h and livetree.c

Correct some typos discovered with the codespell utility.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

libfdt/libfdt.h

@@ -61,7 +61,7 @@
 #define FDT_ERR_NOTFOUND	1
 	/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
 #define FDT_ERR_EXISTS		2
-	/* FDT_ERR_EXISTS: Attemped to create a node or property which
+	/* FDT_ERR_EXISTS: Attempted to create a node or property which
 	 * already exists */
 #define FDT_ERR_NOSPACE		3
 	/* FDT_ERR_NOSPACE: Operation needed to expand the device
@@ -700,7 +700,7 @@ const char *fdt_get_alias_namelen(const void *fdt,
 				  const char *name, int namelen);
 
 /**
- * fdt_get_alias - retreive the path referenced by a given alias
+ * fdt_get_alias - retrieve the path referenced by a given alias
  * @fdt: pointer to the device tree blob
  * @name: name of the alias th look up
  *

livetree.c

@@ -204,7 +204,7 @@ struct node *merge_nodes(struct node *old_node, struct node *new_node)
 			}
 		}
 
-		/* if no collision occured, add child to the old node. */
+		/* if no collision occurred, add child to the old node. */
 		if (new_child)
 			add_child(old_node, new_child);
 	}