Clean up manifest

* Switch these repositories from androidarmv6 to CyanogenMod since they don't contain anything useful for our devices:
android_frameworks_base
android_hardware_libhardware_legacy
android_hardware_msm7k
android_hardware_qcom_gps
android_vendor_cm

* Remove android_vendor_google since it's only useful for armv6 devices
* Switch android_hardware_sony_DASH to official cm-10.1 repository
* Fix superuser after last merge
* Add remaining devices from cm42semc organization
* Clean up & little reorganization

Signed-off-by: Michael Bestas <mikeioannina@gmail.com>