[Fingerprint] Export FingerprintEnrollIntroduction

Export FingerprintEnrollIntroduction activity under the permission
MANAGE_FINGERPRINT so that setup wizard can start it.

Bug: 21695577
Change-Id: If466c6e484a4aa0c10382cfedab0aad10ae26702
(cherry picked from commit 052297172e33ec906a5da10a953be811ff60731c)
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 3367345..8aac7d4 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1434,7 +1434,14 @@
         <activity android:name=".fingerprint.FingerprintEnrollFindSensor" android:exported="false"/>
         <activity android:name=".fingerprint.FingerprintEnrollEnrolling" android:exported="false"/>
         <activity android:name=".fingerprint.FingerprintEnrollFinish" android:exported="false"/>
-        <activity android:name=".fingerprint.FingerprintEnrollIntroduction" android:exported="false"/>
+        <activity android:name=".fingerprint.FingerprintEnrollIntroduction"
+            android:exported="true"
+            android:permission="android.permission.MANAGE_FINGERPRINT">
+            <intent-filter>
+                <action android:name="android.settings.FINGERPRINT_SETUP" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
 
         <!-- Note this must not be exported since it returns the password in the intent -->
         <activity android:name="ConfirmLockPattern$InternalActivity"