Fix an issue on hardcoded alarm settings intent

This change fixes a TODO to fix the behavior that the quick settings directly specifies a class of AOSP desk clock.
Currently the quick settings can't work with other alarm clocks and that's fixed by calling "android.intent.action.SET_ALARM" instead.

Change-Id: I028b8a320e945921c096fdc776b52441e7d07202
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index dfc68f4..2629b11 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -64,6 +64,9 @@
     <uses-permission android:name="android.permission.READ_DREAM_STATE" />
     <uses-permission android:name="android.permission.WRITE_DREAM_STATE" />
 
+    <!-- Alarm clocks -->
+    <uses-permission android:name="com.android.alarm.permission.SET_ALARM" />
+
     <application
         android:persistent="true"
         android:allowClearUserData="false"