msm: mdss: hdmi: Security check for EDID 3D data parsing

While parsing EDID (Extended display identification data) received
from TV for 3D data and other, proper buffer overflow check is done
to avoid data overflow or overwrite.
Also, replace snprintf with scnprintf for better memory copy results.

CRs-Fixed: 542823
Change-Id: I2603beea6eb88a92b013a1a45d960a4c3ba6c09b
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>