Introduce memory requirement for 540p and lower devices

Add smaller memory requirement for devices with 540p and
lower screen resolutions for Lollipop MR1.

Restore requirement on when ActivityManager.isLowRamDevice()
must return "true", which was removed in Android 5.0 CDD as
512MB available to kernel and above was not a supported
memory configuration for non-watch devices.

Bug: 17364400
Bug: 20142414

Change-Id: I84f01bcbf9aa94448b1629e0e2596f9ea2dd4e56
diff --git a/src/compatibility/5.1/android-5.1-cdd.html b/src/compatibility/5.1/android-5.1-cdd.html
index bd8b17f..ef84ff8 100644
--- a/src/compatibility/5.1/android-5.1-cdd.html
+++ b/src/compatibility/5.1/android-5.1-cdd.html
@@ -3635,9 +3635,18 @@
  </tr>
  <tr>
     <td><ul>
-    <li class="table_list">xhdpi or lower on small/normal screens</li>
-    <li class="table_list">hdpi or lower on large screens</li>
-    <li class="table_list">mdpi or lower on extra large screens</li></ul></td>
+    <li class="table_list">hdpi or lower on small/normal screens</li>
+    <li class="table_list">mdpi or lower on large screens</li>
+    <li class="table_list">ldpi or lower on extra large screens</li>
+    </ul></td>
+    <td>424MB</td>
+    <td>Not applicable</td>
+ </tr>
+ <tr>
+    <td><ul>
+    <li class="table_list">xhdpi or higher on small/normal screens</li>
+    <li class="table_list">hdpi or higher on large screens</li>
+    <li class="table_list">mdpi or higher on extra large screens</li></ul></td>
     <td>512MB</td>
     <td>832MB</td>
  </tr>
@@ -3664,6 +3673,10 @@
 dedicated to hardware components such as radio, video, and so on that is not
 under the kernel&rsquo;s control.</p>
 
+<p>Device implementations with less than 512MB of memory available to the kernel
+and userspace, unless an Android Watch, MUST return the value "true" for
+ActivityManager.isLowRamDevice().</p>
+
 <p>Android Television devices MUST have at least 5GB and other device
 implementations MUST have at least 1.5GB of non-volatile storage available for
 application private data. That is, the /data partition MUST be at least 5GB for
@@ -4816,4 +4829,4 @@
 
 </div>
 </body>
-</html>
\ No newline at end of file
+</html>