load ro.recovery_id property from recovery partition

Change-Id: I9dc1f325e353375d9c1c8ed949636e2404601076
diff --git a/init/Android.mk b/init/Android.mk
index 31d2fcd..de065dc 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -50,7 +50,10 @@
     watchdogd.cpp \
 
 LOCAL_MODULE:= init
-LOCAL_C_INCLUDES += system/extras/ext4_utils
+LOCAL_C_INCLUDES += \
+    system/extras/ext4_utils \
+    system/core/mkbootimg
+
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
 LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_UNSTRIPPED)