hdmitx: update edid attach after reading once [1/1]

hdmitx: update edid attach after reading once [1/1]

PD#SWPL-17476

Problem:
After kernel boots up, there will no edid info for vinfo

Solution:
Need update edid attach after reading once
In kernel init, hdmitx / vout / edid with attach once time
Normal replug, plugin / edid / uevent / mode setting / attach
Also, init DRM_DB[0] data.

Verify:
G12/U212

Change-Id: I188f0972c882a17efcbc568ef7d0db861b9b6c0a
Signed-off-by: Zongdong Jiao <zongdong.jiao@amlogic.com>
(cherry picked from commit 1c185cb0c069638c6391f424637f57abdaf99570)