media_module: h265 dvb playback unsmooth and mosaic [1/1]

media_module: h265 dvb playback unsmooth and mosaic [1/1]

PD#SWPL-31281

Problem:
Because the mmu box is mistakenly released,
cause mmu memory has no cache mechanism, so
memory allocation spend a lot of time(ave 7ms),
leading to playback unsmooth.And DVB playback,
decoding speed is not enough to lead stream
buffer overflow, then show mosaic picture.

Solution:
The current mechanism is not to release mmu
idx to resolve this issue.

Verify:
AB311-B

Change-Id: I6eaf0eb7ffd659b96907a352cf4d548070569001
Signed-off-by: Peng Yixin <yixin.peng@amlogic.com>