build: Add support for ext3 and ext4 images

Change-Id: I63b36bfa0036419df92a60a1f8f7b0a7e6b1b62e
diff --git a/core/config.mk b/core/config.mk
index 6ff3d75..1e31bb1 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -208,8 +208,8 @@
 MKEXT2IMG := $(HOST_OUT_EXECUTABLES)/genext2fs$(HOST_EXECUTABLE_SUFFIX)
 MKEXT2BOOTIMG := external/genext2fs/mkbootimg_ext2.sh
 MKTARBALL := build/tools/mktarball.sh
-TUNE2FS := tune2fs
-E2FSCK := e2fsck
+TUNE2FS := $(HOST_OUT_EXECUTABLES)/tune2fs$(HOST_EXECUTABLE_SUFFIX)
+E2FSCK := $(HOST_OUT_EXECUTABLES)/e2fsck$(HOST_EXECUTABLE_SUFFIX)
 JARJAR := $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py