op5: enable split A2DP to implement A2DP encoding offload

* "Split A2DP" probably stands for splitting A2DP output
  stream out from A2DP HAL to primary audio HAL, which
  makes it possible to offload SBC / aptX / AAC ... encoding
  to DSP.

* Primary audio HAL requires libbthost_if to transmit BT
  packets.

Change-Id: I403a66ef2d2f6a358fbdd4c0654812e6bf30a2b3

BoardConfig.mk

@@ -120,7 +120,7 @@ AUDIO_FEATURE_ENABLED_DTS_EAGLE := false
 AUDIO_FEATURE_ENABLED_HW_ACCELERATED_EFFECTS := false
 AUDIO_FEATURE_ENABLED_AUDIOSPHERE := true
 AUDIO_FEATURE_ENABLED_USB_TUNNEL_AUDIO := true
-AUDIO_FEATURE_ENABLED_SPLIT_A2DP := false
+AUDIO_FEATURE_ENABLED_SPLIT_A2DP := true
 AUDIO_FEATURE_ENABLED_3D_AUDIO := true
 AUDIO_FEATURE_ENABLED_VBAT_MONITOR := true
 AUDIO_FEATURE_ENABLED_ANC_HEADSET := true

device.mk

@@ -127,6 +127,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_COPY_FILES += \
     external/ant-wireless/antradio-library/com.dsi.ant.antradio_library.xml:system/etc/permissions/com.dsi.ant.antradio_library.xml
 
+# Bluetooth
+PRODUCT_PACKAGES += \
+    libbthost_if
+
 # Camera
 PRODUCT_PACKAGES += \
     MiuiCamera

proprietary-files.txt

@@ -82,6 +82,8 @@ vendor/lib/libhwdaphal.so
 bin/btnvtool
 bin/hci_qcomm_init
 bin/wcnss_filter
+lib/libbthost_if.so
+lib64/libbthost_if.so
 vendor/lib64/libbtnv.so
 vendor/lib/libbtnv.so