Install the recovery binary directly to the recovery image.

This eliminated the previous hack, that doesn't work reliably with the
"LOCAL_REQUIRED_MODULES := mkfs.f2fs".

Bug: 19666886
Change-Id: I1f0a2d41129f402c0165f3b86b6fda077291f282
diff --git a/Android.mk b/Android.mk
index 9fd3f86..dd1e96e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -84,11 +84,7 @@
     LOCAL_STATIC_LIBRARIES += libext4_utils_static libz
 endif
 
-# This binary is in the recovery ramdisk, which is otherwise a copy of root.
-# It gets copied there in config/Makefile.  LOCAL_MODULE_TAGS suppresses
-# a (redundant) copy of the binary in /system/bin for user builds.
-# TODO: Build the ramdisk image in a more principled way.
-LOCAL_MODULE_TAGS := eng
+LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/sbin
 
 ifeq ($(TARGET_RECOVERY_UI_LIB),)
   LOCAL_SRC_FILES += default_device.cpp