[PATCH V2] ubifs: Add logging functions for ubifs_msg, ubifs_err and ubifs_warn

[Artem Bityutskiy]

On Thu, 2016-03-03 at 04:25 -0800, Joe Perches wrote:
> My suggestion would be to add him and designate you and Adrian
> as R: reviewers instead of M: maintainers like below.

I think it is a little bit too early.