Fix keyguard landscape layout on phones

This particular layout didn't have layout_height specified, which
is undefined.  However, the undefined behavior seems to have changed
on the platform to one where this layout no longer works.  Not
specifying layout_height causes the security area view to be 0 pixels
wide, effectively ignoring layout_weight.

Fixes bug 7283261

Change-Id: I0e3d156e9b2d7ef1492dec9791f0e241e8cd7fe6

Author: Jim Miller

core/res/res/layout-land/keyguard_host_view.xml

@@ -29,6 +29,7 @@
 
     <include layout="@layout/keyguard_widget_region"
         android:layout_width="0dp"
+        android:layout_height="match_parent"
         android:layout_weight=".45" />
 
     <com.android.internal.policy.impl.keyguard.KeyguardSecurityViewFlipper