BT: add sysprop to enable OPUS codec

Add new system proprty persist.bluetooth.opus.enabled to
indicate devices enable OPUS codec.

Bug: 254609888
Test: atest net_test_stack:A2dpCodecConfigTest#init
Change-Id: I3741ea42b5513ae1dd0cb7609301953a13861293

bluetooth/bt_vendor_overlay.conf

@@ -10,3 +10,5 @@ SarBackOffHighResolution = true
 BqrEventMaskValueUpdate = 262238
 
 BtA2dpOffloadCap = sbc-aac-aptx-aptxhd-ldac-opus
+
+BtOpusEnabled = true

device-cheetah.mk

@@ -164,6 +164,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_PACKAGES_DEBUG += \
     hci_inject
 
+# Bluetooth OPUS codec
+PRODUCT_PRODUCT_PROPERTIES += \
+    persist.bluetooth.opus.enabled=true
+
 # Bluetooth Tx power caps
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/bluetooth/bluetooth_power_limits_cheetah.csv:$(TARGET_COPY_OUT_VENDOR)/etc/bluetooth_power_limits.csv \

device-panther.mk

@@ -147,6 +147,10 @@ PRODUCT_PACKAGES += \
 PRODUCT_PACKAGES_DEBUG += \
     hci_inject
 
+# Bluetooth OPUS codec
+PRODUCT_PRODUCT_PROPERTIES += \
+    persist.bluetooth.opus.enabled=true
+
 # Bluetooth Tx power caps
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/bluetooth/bluetooth_power_limits_panther.csv:$(TARGET_COPY_OUT_VENDOR)/etc/bluetooth_power_limits.csv \