杭州研智开发板
Sound driver for wm8960.

Test Plan:
* aplay play wav file
* arecord works

Reviewers: MR

Reviewed By: MR

Subscribers: HFLW

Maniphest Tasks: T73

Differential Revision: http://qa.emsym.org/D3
研智 默认配置选中WM8960音频

make blurr_yanzhi_defconfig ARCH=arm