ASoC: zte: zx-tdm: remove redundant variables dev

In this function, the variable 'dev' is assigned to '&pdev->dev',
but in the following code, all the assignments to 'struce device'
are used '&pdev->dev' instead of 'dev',except 'zx_tdm->dev'.
So,the variable 'dev' in this function is redundant and can be
replaced by '&pdev->dev' as elsewhere.

Signed-off-by: tangbin <tangbin@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20200311144646.11292-1-tangbin@cmss.chinamobile.com


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