libbt-vendor: Fix BLUETOOTH_MAC_ADDR_BOOT_PROPERTY definition

HIDL interface still uses ro.boot.btmacaddr, so stick to that

Change-Id: Ica31816844ba147a22ea20c0ed2f0a4b0fad1592
diff --git a/libbt-vendor/src/bt_vendor_qcom.c b/libbt-vendor/src/bt_vendor_qcom.c
index 35df9b0..8a16d2e 100644
--- a/libbt-vendor/src/bt_vendor_qcom.c
+++ b/libbt-vendor/src/bt_vendor_qcom.c
@@ -24,7 +24,7 @@
  *
  ******************************************************************************/
 #define LOG_TAG "bt_vendor"
-#define BLUETOOTH_MAC_ADDR_BOOT_PROPERTY "ro.vendor.boot.btmacaddr"
+#define BLUETOOTH_MAC_ADDR_BOOT_PROPERTY "ro.boot.btmacaddr"
 
 #include "bt_vendor_lib.h"
 #include "bt_vendor_persist.h"