增加sysfs接口

hc

2023-08-30 862c27fc9920c83318c784bfdadf43a65df1ec8f

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MIC_NUM: 6 
MIC_COORD:[0.035,0,0];[0.0175,-0.03031,0];[-0.0175,-0.03031,0];[-0.035,0,0];[-0.0175,0.03031,0];[0.0175,0.03031,0] 
REF_CH: 2 
WAKEUP_MIC_INDEX: 0