This patch starts using introduced I2C bus registration helper by cleaning
up registration currently done in various places and by doing necessary
board file modifications.
Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>