Build Conexant HD-audio codec support

modulename: snd-hda-codec-conexant.ko

configname: CONFIG_SND_HDA_CODEC_CONEXANT

Linux Kernel Configuration
└─>Device Drivers
└─>Sound
└─>Advanced Linux Sound Architecture
└─>PCI devices
└─>Build Conexant HD-audio codec support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Say Y here to include Conexant HD-audio codec support in
snd-hda-intel driver, such as CX20549.