remoteproc: loader: correct image store comments

fix errors in the image store operations comments

Signed-off-by: Wendy Liang <jliang@xilinx.com>

lib/include/openamp/remoteproc_loader.h

@@ -58,9 +58,7 @@ extern "C" {
  * @close: user defined callback to close the "firmware" to clean up
  *         after loading
  * @load: user defined callback to load the firmware contents to target
- *           memory
- * @load_finish: user defined callback used to make sure all the async
- *               firmware loading finish
+ *        memory or local memory
  * @features: loader supported features. e.g. seek
  */
 struct image_store_ops {