cm: Add CAF bt-vendor variant

Change-Id: I70dec38d3fc22e1530c23bd0b4b6ce0446534eba
diff --git a/default.xml b/default.xml
index d924118..ba97fb9 100644
--- a/default.xml
+++ b/default.xml
@@ -179,6 +179,7 @@
   <project path="hardware/qcom/audio-caf/msm8974" name="CyanogenMod/android_hardware_qcom_audio" groups="qcom,qcom_audio" revision="cm-13.0-caf-8974" />
   <project path="hardware/qcom/audio-caf/msm8994" name="CyanogenMod/android_hardware_qcom_audio" groups="qcom,qcom_audio" revision="cm-13.0-caf-8994" />
   <project path="hardware/qcom/bt" name="CyanogenMod/android_hardware_qcom_bt" groups="qcom" />
+  <project path="hardware/qcom/bt-caf" name="CyanogenMod/android_hardware_qcom_bt" groups="qcom" revision="cm-13.0-caf" />
   <project path="hardware/qcom/camera" name="CyanogenMod/android_hardware_qcom_camera" groups="qcom" />
   <project path="hardware/qcom/display" name="CyanogenMod/android_hardware_qcom_display" groups="qcom,qcom_display" />
   <project path="hardware/qcom/display-caf/apq8084" name="CyanogenMod/android_hardware_qcom_display" groups="qcom,qcom_display" revision="cm-13.0-caf-8084" />