Build hwdep interface for HD-audio driver

configname: CONFIG_SND_HDA_HWDEP

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>PCI sound devices
└─>Intel HD Audio
└─>Build hwdep interface for HD-audio driver
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Say Y here to build a hwdep interface for HD-audio driver.
This interface can be used for out-of-band communication
with codecs for debugging purposes.