amlhwdmx: CB1 fix continuous resolution switching crash [1/1]

PD#SWPL-185001

Problem:
crash when continuous resolution switching

Solution:
memset current dmx context when release current dmx

Verify:
(detail info)

Change-Id: I3f644d939d059fdb155ad5c0486f8a9a54b145c6
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
2 files changed