dragonboards: refactor graphics configs to independent fragments

Breakdown graphics configs to project specific fragments and
include them in target device config files individually.

It is the first step in cherry-picking the board specific
features/projects in the future target configuration(s).

Change-Id: If4aec9b7c789a243b98fcce8b4a4b6fcfd828c0a
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
18 files changed