mh264: reload ucode when decode error. [1/1]

mh264: reload ucode when decode error. [1/1]

PD#SWPL-14162

Problem:
h264 can not decode out frame when reboot or
hot plug signal cable.
pmem ucode may switch to swap code. and decode
timeout or other error, then amvdec_stop, the
pmem ucode cannot start decode when start next
frame, so need reload ucode.

Solution:
reload ucode to avoid the swap code in pmem when
start decode.

Verify:
x301

Change-Id: Id55054599b90b2baab5d5a0ccff191e1186a03ad
Signed-off-by: shihong.zheng <shihong.zheng@amlogic.com>