Mpeg:Only allow firmware >= 6 for warmup

[sum2012]

Fix blue screen in #13146

[hrydgard]

Wasn't there some 3.x game that required warmup too? Or not?

[sum2012]

Final Fantasy tactics Firmware 3.0.3 the game work warm up and don't have problem.
JPCSPTrace log: https://gist.github.com/sum2012/0ad2108cbe6ada8bc86e996dcf779670
In the JPCSPtace log: https://gist.github.com/sum2012/0ad2108cbe6ada8bc86e996dcf779670
sceMpegGetAtracAu and sceMpegGetAvcAu don't return ERROR_MPEG_NO_DATA

[hrydgard]

I guess let's try it...

[sum2012]

I test urgently rather than god eater firmware 6.xx

[sum2012]

Zettai Meikyuu Grimm: Nanatsu no Kagi to Rakuen no Otome which firmware 6.20
Only return ERROR_MPEG_NO_DATA from in the video's middle
https://gist.github.com/sum2012/08f4eef7c5a032d8a10e9850a84221c5

[unknownbrackets]

Mid stream, ERROR_MPEG_NO_DATA is returned when there's not enough data to produce a stream. This may be true even for "warm up", I'm not sure the exact semantics. I think I've still gotten no data when calling it with a lot of packets. I've wondered if the ME is decoding packets in the background after add.

-[Unknown]

[sum2012]

Beginning warm up maybe only required in God Eater Series's game