Merge "disp: added environment variable for build.sh techpack display_tp"

display_driver_product.mk

@@ -10,3 +10,5 @@ endif
 ifeq ($(DISPLAY_DLKM_ENABLE),  true)
 	PRODUCT_PACKAGES += msm_drm.ko
 endif
+
+DISPLAY_MODULES_DRIVER := msm_drm.ko