Merge "Adds protection level 'role' to SYSTEM_CAMERA permission" into sc-dev

    <!-- @SystemApi Required in addition to android.permission.CAMERA to be able to access

           system only camera devices.

           <p>Protection level: system|signature

           <p>Protection level: system|signature|role

           @hide -->

    <permission android:name="android.permission.SYSTEM_CAMERA"

        android:permissionGroup="android.permission-group.UNDEFINED"

        android:label="@string/permlab_systemCamera"

        android:description="@string/permdesc_systemCamera"

        android:protectionLevel="system|signature" />

        android:protectionLevel="system|signature|role" />

    <!-- @SystemApi Allows receiving the camera service notifications when a camera is opened

            (by a certain application package) or closed.