releasetools: build_super_image: Do not set readonly attr

* Makes logical partitions writable when flashed to the device

Change-Id: Id473acaedab9400870700bc317a140fd73a58456
Signed-off-by: RITEFANG <1721985272@qq.com>

tools/releasetools/build_super_image.py

@@ -62,7 +62,7 @@ def GetArgumentsForImage(partition, group, image=None):
   image_size = sparse_img.GetImagePartitionSize(image) if image else 0
 
   cmd = ["--partition",
-         "{}:readonly:{}:{}".format(partition, image_size, group)]
+         "{}:none:{}:{}".format(partition, image_size, group)]
   if image:
     cmd += ["--image", "{}={}".format(partition, image)]