Make Contacts app run on L devices

Bug: 25629359
Change-Id: Ide49fcf702042e67ffb3e1bc1b924faae07eccd4
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 2d685d7..4f85f56 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -19,7 +19,7 @@
     android:versionCode="10400"
     android:versionName="1.4.0">
 
-    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="23" />
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="23" />
     <original-package android:name="com.android.contacts" />
 
     <uses-permission android:name="android.permission.CALL_PHONE" />