[1/2] OL: Introduce attribute for color picker enablement

Get rid of the dependency on multi color led overlay value
to allow color picker for all devices.

Change-Id: I0a0b7284b6b6bd2497076f85bd0788f575532b1a
diff --git a/res/values/custom_attrs.xml b/res/values/custom_attrs.xml
index d8e3c59..658eed8 100644
--- a/res/values/custom_attrs.xml
+++ b/res/values/custom_attrs.xml
@@ -28,6 +28,7 @@
 
     <declare-styleable name="ColorSelectPreference">
         <attr name="ledPreview" format="boolean" />
+        <attr name="multiColor" format="boolean" />
         <attr name="withAlpha" format="boolean" />
     </declare-styleable>
 </resources>