It seems WM_ADSP2("DSP1", 0) is added twice to the widgets list, remove
that and in place use ARIZONA_DSP_WIDGETS(DSP1, "DSP1").

We need to make sure that the DSP1 Aux widgets are provided otherwise
we'll see errors such as "Failed to add route DSP1 Aux 1 -> DSP1" etc.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>