target: apq8084: Include display headers for apq8084

Update target location with display header support
for APQ8084.

Change-Id: If1a25b8a8d576e73b56a0a1b3d78c50a6472635c
diff --git a/target/apq8084/rules.mk b/target/apq8084/rules.mk
index ef4c377..8ab7bd5 100644
--- a/target/apq8084/rules.mk
+++ b/target/apq8084/rules.mk
@@ -1,6 +1,7 @@
 LOCAL_DIR := $(GET_LOCAL_DIR)
 
 INCLUDES += -I$(LOCAL_DIR)/include -I$(LK_TOP_DIR)/platform/msm_shared
+INCLUDES += -I$(LK_TOP_DIR)/dev/gcdb/display -I$(LK_TOP_DIR)/dev/gcdb/display/include
 
 PLATFORM := apq8084