Add simg2img and e2fsck to the otatools.

Change-Id: I31225399c6ef9cae38c825755e301fdc70ce194b
diff --git a/core/Makefile b/core/Makefile
index 5a60e85..a25d80f 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -997,7 +997,9 @@
 	  $(HOST_OUT_JAVA_LIBRARIES)/dumpkey.jar \
 	  $(HOST_OUT_JAVA_LIBRARIES)/signapk.jar \
 	  $(HOST_OUT_EXECUTABLES)/mkuserimg.sh \
-	  $(HOST_OUT_EXECUTABLES)/make_ext4fs
+	  $(HOST_OUT_EXECUTABLES)/make_ext4fs \
+	  $(HOST_OUT_EXECUTABLES)/simg2img \
+	  $(HOST_OUT_EXECUTABLES)/e2fsck
 
 OTATOOLS := $(DISTTOOLS) \
 	  $(HOST_OUT_EXECUTABLES)/aapt