Docs: Consolidating encryption, fixing nav.

Bug: 12837978

Change-Id: I9328d956123605d2c93888c57ff7d95a9b1a1e3c
diff --git a/src/devices/tech/index.jd b/src/devices/tech/index.jd
index 7f45337..fbb4cc7 100644
--- a/src/devices/tech/index.jd
+++ b/src/devices/tech/index.jd
@@ -2,7 +2,7 @@
 @jd:body
 
 <!--
-    Copyright 2013 The Android Open Source Project
+    Copyright 2014 The Android Open Source Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -56,23 +56,11 @@
 about debugging at the platform level.</p>
 <p><a href="{@docRoot}devices/debugtune.html">&raquo; Debugging Information</a></p>
 
-<h2 id="encryption-technical-information">Encryption Technical Information</h2>
-<p>The Android Open-Source Project includes the ability to encrypt the user's data.
-This document is written for 3rd parties developing Android devices who want to
-include support for encryption on their device.  It covers the few things that
-must be done so encryption will work.</p>
-<p><a href="{@docRoot}devices/tech/encryption/index.html">&raquo; Encryption Information</a></p>
-
-<h2 id="external-storage-technical-information">External Storage Technical Information</h2>
-<p>Android supports devices with external storage, typically provided by physical
-media or an emulation layer.  This document is designed to help systems
-integrators configure Android devices.</p>
-<p><a href="{@docRoot}devices/tech/storage/index.html">&raquo; External Storage Technical Information</a></p>
-
-<h2 id="input-technical-information">Input Technical Information</h2>
-<p>Android's input subsystem is responsible for supporting touch screens,
-keyboard, joysticks, mice and other devices.</p>
-<p><a href="{@docRoot}devices/tech/input/index.html">&raquo; Input Information</a></p>
+<h2 id="HAL-technical-information">HAL File Reference</h2>
+<p>Android's Hardware Abstraction Layer (HAL) provides the interface between
+software APIs and hardware drivers. This section contains the commented code
+files of the HAL.</p>
+<p><a href="{@docRoot}devices/reference/files.html">&raquo; HAL Reference</a></p>
 
 <h2 id="kernel-technical-information">Kernel Technical Information</h2>
 <p>The kernel configuration settings in this document are meant to be used as a base
@@ -85,13 +73,6 @@
 time spent by different device components in different states.</p>
 <p><a href="{@docRoot}devices/tech/power.html">&raquo; Power Information</a></p>
 
-<h2 id="security-technical-information">Security Technical Information</h2>
-<p>Android provides a robust multi-layered security architecture that provides the 
-flexibility required for an open platform, while providing protection for all users 
-of the platform. This document focuses on the security features of the core Android 
-platform.</p>
-<p><a href="{@docRoot}devices/tech/security/index.html">&raquo; Android Security Overview</a></p>
-
 <h2 id="tradefed-test-infrastructure">Trade Federation Testing Infrastructure</h2>
 <p>Trade Federation is a continuous test framework for running tests on Android devices. 
 Trade Federation's modularity makes it straightforward to slot into environments with existing build,