update source and include paths for LE

Change-Id: I6d04b1d2846364cda2935d143c98194c54159482

Makefile.am

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-DISPLAY_ROOT=$(ROOTDIR)vendor/qcom/opensource/display-drivers
+DISPLAY_ROOT=$(ROOTDIR)display/vendor/qcom/opensource/display-drivers
 CONFIG_DRM_MSM=$(MODULE_DRM_MSM)
 KBUILD_OPTIONS := DISPLAY_ROOT=$(DISPLAY_ROOT) CONFIG_DRM_MSM=$(CONFIG_DRM_MSM)