cleaned up issues with Daniel's code

There were a lot of style things and a misunderstanding of the protocol
between the cape and the BBB.
diff --git a/bbb_cape/src/bbb/crc.cc b/bbb_cape/src/bbb/crc.cc
index 60e665a..214f86f 100644
--- a/bbb_cape/src/bbb/crc.cc
+++ b/bbb_cape/src/bbb/crc.cc
@@ -1,4 +1,4 @@
-#include "crc.h"
+#include "bbb/crc.h"
 
 #include "aos/common/once.h"