Without this the previously written value was written to this reg,
which caused the different configuration registers to be reset.
Signed-off-by: Chris Garren <cdgarren@indesign-llc.com>
Link: https://lore.kernel.org/r/1588599820-57994-1-git-send-email-cdgarren@indesign-llc.comSigned-off-by: Mark Brown <broonie@kernel.org>