ANDROID: net: core: fix UID-based routing

Fix RTA_UID enum to match it with the Android userspace code which
assumes RTA_UID=18.

With this patch all Android kernel networking unit tests mentioned here
https://source.android.com/devices/tech/config/kernel_network_tests.html
are success.

Without this patch multinetwork_test.py unit test fails.

Change-Id: I3ff36670f7d4e5bf5f01dce584ae9d53deabb3ed
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index 0e34046..5312454 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -305,10 +305,10 @@
 	RTA_TABLE,
 	RTA_MARK,
 	RTA_MFC_STATS,
+	RTA_UID,
 	RTA_VIA,
 	RTA_NEWDST,
 	RTA_PREF,
-	RTA_UID,
 	__RTA_MAX
 };