Fix rawrtc header paths

The headers are included at a nicer path, use that instead.

Change-Id: I7e0b1989e505557fea0e37b441538e9131a97620
Signed-off-by: Austin Schuh <austin.schuh@bluerivertech.com>
diff --git a/aos/network/rawrtc.h b/aos/network/rawrtc.h
index f9de8b0..f43cc5e 100644
--- a/aos/network/rawrtc.h
+++ b/aos/network/rawrtc.h
@@ -7,7 +7,7 @@
 extern "C" {
 #include <rawrtc.h>
 
-#include "external/com_github_rawrtc_rawrtc_common/include/rawrtcc/utils.h"
+#include "rawrtcc/utils.h"
 }
 
 #include "flatbuffers/flatbuffers.h"