venus: Replace BTM_DEF_LOCAL_NAME with a sysprop

Change-Id: I2c90efac01e61500eb1be23bb0ae6f96c2acdc53

device.mk

@@ -25,5 +25,9 @@ DEVICE_PACKAGE_OVERLAYS += \
 PRODUCT_SOONG_NAMESPACES += \
     $(LOCAL_PATH)
 
+# Rootdir
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/rootdir/etc/init.venus.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.venus.rc
+
 # Call the proprietary setup
 $(call inherit-product, vendor/xiaomi/venus/venus-vendor.mk)

rootdir/etc/init.venus.rc

@@ -0,0 +1,8 @@
+#
+# Copyright (C) 2023 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+on boot
+    setprop bluetooth.device.default_name "Mi 11"