UBI: make debugging messages dynamic

This patch adds a possibility to dynamically select UBI debugging
messages, instead of selecting them compile-time from the configuration
menu. This is much more flexible, and consistent with UBIFS, and this
also simplifies UBI Kconfig menu and the code.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
3 files changed