Register NetworkController to DumpManager

It seems that enough Dependency.get() calls were removed for
NetworkController that the dumpsys stopped including NetworkController
in it. This CL manually registers NetworkController so we can have those
logs back.

Test: `adb shell dumpsys activity service com.android.systemui/.SystemUIService | grep NetworkController`
Fixes: 196486687
Change-Id: Id8865dd2159a6e3d85ebe80a3d0c4e05d0c16491
(cherry picked from commit 2b79873e)