Update cyanogenmod_galaxys4gmtd_defconfig

Fix SoD.
Found this in the Vibrant config.
Fix call audio.
Changes from herring source file wm8994_vibrantplus.c
Merge pull request #8 from noiphonehere/android-samsung-3.0-ics

Update cyanogenmod_galaxys4gmtd_defconfig and wm8994_herring.c