by jbbi <jbbi@ingenic.cn> 24 APR 2012

appointment:

DSP:
/---------------------------------------------------\
| /dev/snd/dsp   |  minor = 3 + 16*0  | aic(i2s)  |
| /dev/snd/dsp1  |  minor = 3 + 16*2  | pcm       |
\---------------------------------------------------/

MIXER:
/---------------------------------------------------\
| /dev/snd/mixer |  minor = 0 + 16*0  | mixer       |
\---------------------------------------------------/
