doze: Add an exported flag in manifest

Targeting S+ (version 31 and above) requires that an explicit value
for android:exported be defined when intent filters are present

Change-Id: I12d27c23624eb5259da582b86ac1bd7572754f0c

doze/AndroidManifest.xml

@@ -30,7 +30,8 @@
         android:label="@string/device_settings_app_name"
         android:persistent="true">
 
-        <receiver android:name=".BootCompletedReceiver">
+        <receiver android:name=".BootCompletedReceiver"
+                  android:exported="false">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
                 <category android:name="android.intent.category.DEFAULT" />
@@ -38,11 +39,13 @@
         </receiver>
 
         <service android:name=".DozeService"
-                 android:permission="OneplusDozeService">
+                 android:permission="OneplusDozeService"
+                 android:exported="true">
         </service>
 
         <activity
             android:name=".DozeSettingsActivity"
+            android:exported="false"
             android:label="@string/ambient_display_title"
             android:theme="@style/Theme.Main">
             <intent-filter>