Revert "Backgrounds: Update resource name to match AOSP changes in WallpaperPicker2"

See: "Use legacy name for partner wallpapers string array" (af6d4ba)

This reverts commit d2ff9ab92652509ccc2720ca92ba197521288aaa.

Change-Id: I91309d4a2aa5a0b35d461db391425ee8b2a4e565
diff --git a/res_1080p/values/arrays.xml b/res_1080p/values/arrays.xml
index eb6271d..e9ac084 100644
--- a/res_1080p/values/arrays.xml
+++ b/res_1080p/values/arrays.xml
@@ -15,7 +15,7 @@
      limitations under the License.
 -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
-    <array name="wallpapers" translatable="false">
+    <array name="partner_wallpapers" translatable="false">
         <item>ascension_blaze</item>
         <item>ascension_ice</item>
         <item>ascension_mist</item>
diff --git a/res_1440p/values/arrays.xml b/res_1440p/values/arrays.xml
index eb6271d..e9ac084 100644
--- a/res_1440p/values/arrays.xml
+++ b/res_1440p/values/arrays.xml
@@ -15,7 +15,7 @@
      limitations under the License.
 -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
-    <array name="wallpapers" translatable="false">
+    <array name="partner_wallpapers" translatable="false">
         <item>ascension_blaze</item>
         <item>ascension_ice</item>
         <item>ascension_mist</item>