Don't drive HDA_SDO
Don't drive HDA_SDO

BUG=chrome-os-partner:12453
TEST=play a youtube video, hear audio

Cherry-pick to link.

Change-Id: Ibc81fb5ac91b15aeb7c222b637aace31562d6170
Signed-off-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/29775
Reviewed-by: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>

akappy7/ChromeOS_EC_LED_Diagnostics,eatbyte/chromium-ec,mtk09422/chromiumos-platform-ec,alterapraxisptyltd/chromium-ec,eatbyte/chromium-ec,longsleep/ec,fourier49/BIZ_EC,gelraen/cros-ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BZ_DEV_EC,eatbyte/chromium-ec,mtk09422/chromiumos-platform-ec,md5555/ec,longsleep/ec,coreboot/chrome-ec,alterapraxisptyltd/chromium-ec,thehobn/ec,akappy7/ChromeOS_EC_LED_Diagnostics,eatbyte/chromium-ec,md5555/ec,longsleep/ec,fourier49/BZ_DEV_EC,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BIZ_EC,mtk09422/chromiumos-platform-ec,alterapraxisptyltd/chromium-ec,gelraen/cros-ec,fourier49/BIZ_EC,fourier49/BZ_DEV_EC,coreboot/chrome-ec,coreboot/chrome-ec,mtk09422/chromiumos-platform-ec,thehobn/ec,fourier49/BIZ_EC,coreboot/chrome-ec,thehobn/ec,gelraen/cros-ec,alterapraxisptyltd/chromium-ec,coreboot/chrome-ec,md5555/ec,thehobn/ec,longsleep/ec,coreboot/chrome-ec,gelraen/cros-ec,akappy7/ChromeOS_EC_LED_Diagnostics,md5555/ec,fourier49/BZ_DEV_EC