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>
diff --git a/db845c.mk b/db845c.mk
index ea61e1e..ac760d8 100644
--- a/db845c.mk
+++ b/db845c.mk
@@ -1,4 +1,7 @@
 $(call inherit-product, device/linaro/dragonboard/full.mk)
+$(call inherit-product, device/linaro/dragonboard/shared/graphics/drm_hwcomposer/device.mk)
+$(call inherit-product, device/linaro/dragonboard/shared/graphics/mesa/device.mk)
+$(call inherit-product, device/linaro/dragonboard/shared/graphics/minigbm_msm/device.mk)
 $(call inherit-product, device/linaro/dragonboard/db845c/device.mk)
 
 ifeq ($(TARGET_KERNEL_USE),5.4)