Docs: Adding HAL updates to home page

Bug: 20423599
Change-Id: Ibd245e020f803a9cd6de75291c492bea4118f486
diff --git a/src/index.jd b/src/index.jd
index 0aa6826..6055e13 100644
--- a/src/index.jd
+++ b/src/index.jd
@@ -41,6 +41,14 @@
   <div class="landing-docs">
     <div class="col-8">
     <h3>What's New</h3>
+<a href="{@docRoot}devices/halref/index.html">
+        <h4>Hardware Abstraction Layer References</h4></a>
+        <p>The <strong><a href="{@docRoot}devices/halref/index.html">Hardware
+        Abstraction Layer (HAL) reference files</a></strong> have been updated to
+        reflect the latest development, such as the introduction of
+        <code>AUDIO_PARAMETER_DEVICE_CONNECT</code> to <strong><a
+        href="{@docRoot}devices/halref/audio_8h_source.html">audio.h</a></strong>.</p>
+
 <a href="{@docRoot}devices/tech/debug/dumpsys.html">
         <h4>Example Dumpsys Diagnostic Output</h4></a>
         <p>In addition to the aforementioned <strong><a
@@ -86,15 +94,6 @@
         directly as <code>permissive_or_unconfined()</code> has been deprecated.
         Similarly, <code>BOARD_SEPOLICY_UNION</code> has been removed, so
         <code>BOARD_SEPOLICY_*</code> variables are suggested insead.</p>
-
-<a href="{@docRoot}devices/bluetooth.html">
-        <h4>Android 5.0 Bluetooth HCI Requirements</h4></a>
-        <p><strong><a
-        href="{@docRoot}devices/Android-5.0-Bluetooth-HCI-Reqs.pdf">Bluetooth
-        Host Controller Interface (HCI) requirements</a></strong> to leverage
-        the Bluetooth Low Energy APIs in Android 5.0 have
-        been published and linked from the <strong><a
-        href="{@docRoot}devices/bluetooth.html">Bluetooth</a></strong> introduction.</p>
     </div>
 
     <div class="col-8">