Update icons for IA.

- in homepage: Connected devices, Apps & notifications, Support
- in Network & internet: Airplane mode, Cellular networks, Tethering,
  VPN, Network reset
- in Connected devices: NFC, Android beam, USB
- in Apps & notifications: Apps, Notifications, Default apps

Bug: 34205154
Test: Visual

Change-Id: I11c72ccbc85d68ed61476f6629dae862abee42fc

res/xml/connected_devices.xml

@@ -21,6 +21,7 @@
     <SwitchPreference
         android:key="toggle_nfc"
         android:title="@string/nfc_quick_toggle_title"
+        android:icon="@drawable/ic_nfc"
         android:summary="@string/nfc_quick_toggle_summary"
         android:order="-5"/>
 
@@ -28,11 +29,13 @@
         android:fragment="com.android.settings.nfc.AndroidBeam"
         android:key="android_beam_settings"
         android:title="@string/android_beam_settings_title"
+        android:icon="@drawable/ic_android"
         android:order="-4"/>
 
     <Preference
         android:key="usb_mode"
         android:title="@string/usb_pref"
+        android:icon="@drawable/ic_usb"
         android:order="-3">
         <intent android:action="android.intent.action.MAIN"
                 android:targetPackage="com.android.settings"