sdm: Add sync task utility.

- Add sync task utility to process commands
  in a single thread of execution. This utility
  provides task handler which will be called back
  into caller in a new thread.

CRs-Fixed: 2053738
Change-Id: Ieeeddac115b0bb76c6f0265a2969ed9af0fe18fa
diff --git a/sdm/libs/utils/Android.mk b/sdm/libs/utils/Android.mk
index fe89104..09e1414 100644
--- a/sdm/libs/utils/Android.mk
+++ b/sdm/libs/utils/Android.mk
@@ -25,6 +25,7 @@
                                  $(SDM_HEADER_PATH)/utils/locker.h \
                                  $(SDM_HEADER_PATH)/utils/rect.h \
                                  $(SDM_HEADER_PATH)/utils/sys.h \
+                                 $(SDM_HEADER_PATH)/utils/sync_task.h \
                                  $(SDM_HEADER_PATH)/utils/utils.h \
                                  $(SDM_HEADER_PATH)/utils/factory.h