mako: bluetooth: read BT address using bdAddrLoader

Add bluetooth address loader to support some arguments:
-i : file path to be read (default, /persist/bluetooth/.bdaddr)
-o : property path to be set (default, persist.service.bt.bdaddr)
-p : if it is set, bd address is printed through standard output

Change-Id: I936f7b6634c60d19bb5e62db822be84c0b3ef022
diff --git a/device.mk b/device.mk
index 9945fe0..2b46f8d 100644
--- a/device.mk
+++ b/device.mk
@@ -161,6 +161,7 @@
 	gps.msm8960
 
 PRODUCT_PACKAGES += \
+	bdAddrLoader \
 	libwfcu \
 	conn_init