minijail: Export include dir.

Bug: 22555701
Change-Id: I2b6926e32bded394f88c4cb6bffcdf0d1a15e625
diff --git a/Android.mk b/Android.mk
index ba6179f..b3b64bc 100644
--- a/Android.mk
+++ b/Android.mk
@@ -43,6 +43,8 @@
 	libminijail.c \
 	signal_handler.c \
 	syscall_filter.c \
-	util.c
+	util.c \
+
 LOCAL_SHARED_LIBRARIES := $(minijailCommonSharedLibraries)
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
 include $(BUILD_SHARED_LIBRARY)