Add toolbox_recovery rules

Build special limited toolbox with SELinux tools for recovery

Change-Id: Ifc76a6bd0468a72081f15ede2a68adf48af8a0f2
diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index 0169fb8..f1777c6 100644
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -46,6 +46,7 @@
 RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libflashutils.so
 RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libstlport.so
 #RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libmincrypt.so
+RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/toolbox
 ifeq ($(TARGET_USERIMAGES_USE_EXT4), true)
     RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libext4_utils.so
 endif