[FRP] Add illustration to lock screen setup

Added the illustration JPG files, and added
SetupWizardUtils.setIllustration method that will change the
illustrations in the layout.

Bug: 18482708
Change-Id: I8c6758113f07cd33f85eaf6bc019e8194d9a17ce
diff --git a/res/layout-sw600dp/setup_preference.xml b/res/layout-sw600dp/setup_preference.xml
index 1e772d9..ec6d2ac 100644
--- a/res/layout-sw600dp/setup_preference.xml
+++ b/res/layout-sw600dp/setup_preference.xml
@@ -21,12 +21,12 @@
     android:orientation="vertical">
 
     <com.android.settings.widget.SetupWizardIllustration
-        android:id="@+id/title_area"
+        android:id="@+id/setup_illustration"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1"
         android:background="@drawable/setup_illustration_bg"
-        android:foreground="@drawable/setup_illustration_wifi_wide">
+        android:foreground="@drawable/setup_illustration">
 
         <LinearLayout
             android:layout_width="match_parent"
diff --git a/res/layout-sw600dp/setup_template.xml b/res/layout-sw600dp/setup_template.xml
index eb210b7..297e9fb 100644
--- a/res/layout-sw600dp/setup_template.xml
+++ b/res/layout-sw600dp/setup_template.xml
@@ -21,12 +21,12 @@
     android:orientation="vertical">
 
     <com.android.settings.widget.SetupWizardIllustration
-        android:id="@+id/illustration_tablet"
+        android:id="@+id/setup_illustration"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1"
         android:background="@drawable/setup_illustration_bg"
-        android:foreground="@drawable/setup_illustration_wifi_wide">
+        android:foreground="@drawable/setup_illustration">
 
         <LinearLayout
             android:layout_width="match_parent"