overlay: Default materials buttons to not all caps

Change-Id: I1916f33d82ef4e103e6d69359489b4eac5425224
diff --git a/overlay/common/frameworks/base/core/res/res/values/config.xml b/overlay/common/frameworks/base/core/res/res/values/config.xml
index a3797b0..8706aff 100644
--- a/overlay/common/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/common/frameworks/base/core/res/res/values/config.xml
@@ -91,4 +91,9 @@
     -->
     <integer translatable="false" name="config_wifi_wakeup_available">1</integer>
 
+    <!-- Whether action menu items should be displayed in ALLCAPS or not.
+         Defaults to true. If this is not appropriate for specific locales
+         it should be disabled in that locale's resources. -->
+    <bool name="config_buttonTextAllCaps">false</bool>
+
 </resources>