Add DDS register support for RME9632 rev >= 152.
This register sets the sample rate for these cards and is required
in addition to the standard control register. It corresponds to a
quartz divisor.
Signed-off-by: NRemy Bruno <remy.bruno@trinnov.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>