Move AVRCP controller support to a different HAL interface

This allows us to add a new BluetoothProfile subclass for
the AVRCP controller role independent of the existing AVRCP target support.

Change-Id: I504bbf58a88808d1a884266992ae0c635c62aca1
diff --git a/include/hardware/bluetooth.h b/include/hardware/bluetooth.h
index f87d784..90f457b 100644
--- a/include/hardware/bluetooth.h
+++ b/include/hardware/bluetooth.h
@@ -47,6 +47,7 @@
 
 #define BT_PROFILE_GATT_ID "gatt"
 #define BT_PROFILE_AV_RC_ID "avrcp"
+#define BT_PROFILE_AV_RC_CTRL_ID "avrcp_ctrl"
 
 /** Bluetooth Address */
 typedef struct {