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

[Joe Perches]

On Tue, 2016-02-23 at 12:21 -0800, Joe Perches wrote:
> The existing logging macros are fairly large and converting the
> macros to functions make the object code smaller.

Artem and Adrian are the nominal maintainers for ubifs.

Artem last had a sign-off on a ubifs patch 6 months ago and
Adrian's
last one was over 3 years ago.

Is there an expected ack/nack/applied handling time for a
ubifs patch like this?

Should this patch go to someone else?

Should the MAINTAINERS entry for ubifs be changed to orphan?