[project][imx6ul] Correct timer interrupt for imx6ul

Change-Id: I7a9d79630ca2b62113a15bf013ec9eb01da26f3a
Signed-off-by: Haoran.Wang <elven.wang@nxp.com>
diff --git a/project/imx6ul-inc.mk b/project/imx6ul-inc.mk
index fa5888b..26a181b 100644
--- a/project/imx6ul-inc.mk
+++ b/project/imx6ul-inc.mk
@@ -20,7 +20,7 @@
 
 WITH_TZASC := true
 
-GLOBAL_DEFINES += TIMER_ARM_GENERIC_SELECTED=CNTP
+GLOBAL_DEFINES += TIMER_ARM_GENERIC_SELECTED=CNTPS
 #
 # GLOBAL definitions
 #