ASoC: cs35l36: Update digital volume TLV

[ Upstream commit 5005a2345825eb8346546d99bfe669f73111b5c5 ]

The digital volume TLV specifies the step as 0.25dB but the actual step
of the control is 0.125dB. Update the TLV to correct this.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220602162119.3393857-3-ckeepax@opensource.cirrus.com


Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>