[mythtv] Latest openGL changes

[Peter Bennett]

I did some testing on Android devices of the latest Master version with 
OpenGL changes. Everything looks good.

The fire 4K still need "Extra Stage" turned on, the Shield does not need 
the extra stage.
opengl-yv12 with Bob 2x HW  and Linear blend HW deinterlace seems the 
best for Fire 4K.
Some of the new OpenGL options have fewer deinterlace options.

  - fire 4K
Extra stage, 1080i, Bob 2x HW-GL
opengl - Bob 2x HW-GL - perfect
opengl-yv12 - Bob 2x HW-GL - perfect
opengl-lite - SW Bob 2x - perfect
opengl-hquyvy - Bob 2x HW-GL - drops 17 frames per second
opengl-rgba - interlaced 2x - drops 2 frames per second, jerky
opengl-rgba - linear blend (software) - perfect

Extra stage, 720p 60 fps
opengl-yv12 - perfect

No green lines

  - Shield
NO Extra stage, 1080i, Bob 2x HW-GL
opengl - Bob 2x HW-GL - perfect
opengl-yv12 - Bob 2x HW-GL - perfect
opengl-lite - SW Bob 2x - perfect
opengl-hquyvy -  Bob 2x HW-GL - perfect
opengl-rgba - interlaced 2x  - perfect

NO Extra stage, 720p 60 fps
opengl - perfect
opengl-yv12 - perfect

No green lines for any size video

Peter