Add icons for Wi-Fi wakeup and notification settings toggles.

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<vector xmlns:android="http://schemas.android.com/apk/res/android"

        android:width="24dp"

        android:height="24dp"

        android:viewportWidth="24.0"

        android:viewportHeight="24.0"

        android:tint="?android:attr/colorControlNormal">

    <path android:fillColor="#FFFFFFFF"

          android:pathData="M10 20v-6h4v6h5v-8h3L12 3 2 12h3v8z" />

    <path android:pathData="M0 0h24v24H0z" />

</vector>

    <SwitchPreference

            android:key="enable_wifi_wakeup"

            android:title="@string/wifi_wakeup"

            android:icon="@drawable/ic_settings_home"

            android:summary="@string/wifi_wakeup_summary" />

    <SwitchPreference

            android:key="notify_open_networks"

            android:title="@string/wifi_notify_open_networks"

            android:icon="@drawable/ic_settings_notifications"

            android:summary="@string/wifi_notify_open_networks_summary" />

    <SwitchPreference