amlhwdmx: CF1 add dmx mgr [1/1]

PD#SWPL-179549

Problem:
using multi dmx dev in resolution switch scene and dual-ts scene

Solution:
add dmx mgr to manage the use of dmx ids

Verify:
(detail info)

Change-Id: If4281b2ed948b295daa108e6d7da3264428e8ec8
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
7 files changed