ASoC: wm8962: fix lambda value

[ Upstream commit 556672d7 ]

According to user manual, it is required that FLL_LAMBDA > 0
in all cases (Integer and Franctional modes).

Fixes: 9a76f1ff

 ("ASoC: Add initial WM8962 CODEC driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/1576065442-19763-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>