remove overlapped ffmpeg codecs

ref: https://github.com/LegacyXperia/android_device_semc_msm7x30-common/commit/4ce4e536045d5d3dcd483047e169ba405c454b1c
add wireless directories
add dhcp conf
remove default ksm
don't build pc
add bluedroid conf

ref: https://github.com/LegacyXperia/android_device_semc_zeus-common/blob/cm-11.0/bluedroid/bdroid_buildcfg.h