hwc: change error logs to debug logs

There were error message that should just be debug messages.
These error logs can cause automation testing to fail.

Change-Id: I4ba681a737e8324da9ef8e7984efa57f70ee8637
display: Enable copybit on msm8610

This change is the hwc and copybit changes need to enable
composition to go through mdp on msm8610.

Change-Id: If0df3a247c5f4f4310966d14fe8fd839bf84b9d5
hwc: Do not include Framebuffer area in calculating total area

In dynamic composition, While calculating total render area of
application layers to decide on which composition to choose,
FrameBuffer layer area shall not be added to the total render area.

Change-Id: Ibfa23130864ebae514ab94e75813bfaa4a61528c
HWC/copybit::Add condition for video layer composition

In case of non overlay target composition of the video
layer should be based on composition of UI layer as well.
(if taget has dynamic composition)

Change-Id: I6f312978f9168dddcf6ad0b1ac72f347b94d6920
CRs-fixed: 516630