Add cm platform sdk repo to manifest.

  <project path="tools/studio/translation" name="platform/tools/studio/translation" groups="notdefault,tools" remote="aosp" />

  <project path="tools/swt" name="platform/tools/swt" groups="notdefault,tools" remote="aosp" />

  <project path="vendor/cm" name="CyanogenMod/android_vendor_cm" />

  <project path="vendor/cmsdk" name="CyanogenMod/cm_platform_sdk" />

</manifest>