Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: make
Change-Id: Ic77394d4d2e1ccedba3a28230d870c5d6108bd40
diff --git a/bluetooth/1.0/IBluetoothHci.hal b/bluetooth/1.0/IBluetoothHci.hal
index 8722616..7996ac3 100644
--- a/bluetooth/1.0/IBluetoothHci.hal
+++ b/bluetooth/1.0/IBluetoothHci.hal
@@ -18,7 +18,7 @@
 
 import IBluetoothHciCallbacks;
 
-/*
+/**
  * The Host Controller Interface (HCI) is the layer defined by the Bluetooth
  * specification between the software that runs on the host and the Bluetooth
  * controller chip. This boundary is the natural choice for a Hardware