[FOSS_TLK]ote: tlk: makefile change for upstream TLK

Add "TASK_MODULES" and "TASKS" variables for upstream TLK to compile tasks
and add them to the final tos.img

Change-Id: Ia472fdbdd589567cc0bea80733c0354bd235b02e
Signed-off-by: Sharif Inamdar <isharif@nvidia.com>
Reviewed-on: http://git-master/r/752877
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Tested-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/makefile b/makefile
index 14aca4f..e322c80 100644
--- a/makefile
+++ b/makefile
@@ -46,9 +46,16 @@
 OUTTASK := $(BUILDDIR)/lk.task
 CONFIGHEADER := $(BUILDDIR)/config.h
 IMGBIN := $(BUILDDIR)/img.bin
-LK_IMAGE ?= $(BUILDDIR)/tos.img
+TOSIMAGE ?= $(BUILDDIR)/tos.img
 MONLIB := $(BUILDDIR)/secure_monitor/libmonitor.a
 
+TASK_MODULES := \
+	trusted_app \
+	trusted_app2
+
+TASKS ?= \
+	$(foreach task,$(TASK_MODULES), ../out/tasks/$(task)/$(task))
+
 ifneq ($(TARGET),t124)
 DEFINES += \
 	WITH_MONITOR_BIN=1