Add a TW_NO_TIMEOUT option

Change-Id: Ifb3a5bd9f1e6c2e9810c90b0aec198e91d5956fc
diff --git a/gui/Android.mk b/gui/Android.mk
index 7ac4bac..18decd0 100644
--- a/gui/Android.mk
+++ b/gui/Android.mk
@@ -61,6 +61,9 @@
 ifneq ($(TW_NO_SCREEN_BLANK),)
 	LOCAL_CFLAGS += -DTW_NO_SCREEN_BLANK
 endif
+ifneq ($(TW_NO_SCREEN_TIMEOUT),)
+	LOCAL_CFLAGS += -DTW_NO_SCREEN_TIMEOUT
+endif
 
 LOCAL_C_INCLUDES += bionic external/stlport/stlport $(commands_recovery_local_path)/gui/devices/$(DEVICE_RESOLUTION)