cbus: Fix compile and don't try to use tag

Fix compile and don't try to use tag

This should be really passed as platform_data from
the board-*.c files.

Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --cc drivers/cbus/cbus.c
Simple merge

diff --cc drivers/cbus/retu-user.c
Simple merge

diff --cc drivers/cbus/retu.c
Simple merge

diff --cc drivers/cbus/tahvo-user.c
Simple merge

diff --cc drivers/cbus/tahvo.c
Simple merge