Exclude mtptest program from simulator builds.

Change-Id: Ia9751a06d7607363e8c16b71f6f3c524833395a0
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/media/mtp/Android.mk b/media/mtp/Android.mk
index b9da15f..4d86064 100644
--- a/media/mtp/Android.mk
+++ b/media/mtp/Android.mk
@@ -15,6 +15,8 @@
 #
 LOCAL_PATH:= $(call my-dir)
 
+ifneq ($(TARGET_SIMULATOR),true)
+
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:=                                       \
@@ -42,6 +44,8 @@
 
 include $(BUILD_EXECUTABLE)
 
+endif
+
 ifeq ($(HOST_OS),linux)
 
 include $(CLEAR_VARS)