While creating the previous patch I checked the cpu's reference manual
to see what the affected registers actually do and noticed that bits
of the DOVE_CPU_CTRL actually used by the code doesn't match the bits
described as AHBSlaveBase in the manual.

I'm not aware of any effect (neither positive nor negative) of this
patch.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>