Add missing dai_driver information to avoid these runtime errors

[   16.433788] asoc: error - multiple DAI f0002c00.i2s registered with no name
[   16.453551] Failed to register DAI
[   16.461222] mpc5200-psc-i2s: probe of f0002c00.i2s failed with error -22
[   16.475242] asoc: error - multiple DAI f0002000.ac97 registered with no name
[   16.488087] mpc5200-psc-ac97 f0002000.ac97: Failed to register DAI
[   16.502222] mpc5200-psc-ac97: probe of f0002000.ac97 failed with error -22
Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>