Fix Pip dependenices on TV

Fix crash in .tv.PipController: .tv.PipController creates a
PipNotification object before assigning mPipMediaController, but
PipNotification calls PipController#getPipMediaController() from its
constructor, receives null, and causes NPE when tries to subscribe to
it.
This CL fixes the crash by providing PipNotification with a
PipMediaController reference directly (as a constructor param).

Bug: 169575409
Bug: 165795012
Test: make && flash adt3-userdebug
Test: atest android.systemui.cts.tv.MicIndicatorTest
Change-Id: I0010863921607cc315acfcbe0cb9d181b79d26b2