[mythtv] Green line android patch

[Peter Bennett]

Hi Mark

I see there is a patch that was never applied, for fixing the green line 
issue. I assigned the ticket back to you.

Ticket URL: <https://code.mythtv.org/trac/ticket/13230#comment:25>

I found that playback on the amazon fire stick has some ugly artifacts 
in the display, These are fixed by reverting the ifdefs that I has added 
that prevent use of YV12. There is a green line but it is preferable to 
the other ugliness that I see.

I tried your patch in ticket 13230 but it does not seem to make any 
difference to the green line.

I suppose what I need to do is make it conditionally use NV12 based on 
where it is running. I will try to find an appropriate way to test what 
type of device we have.

Let me know if you have any suggestions around this.

Peter