tbf: Move the struct to the tbf.h header file
This is the begin of a long march of turning tbf into a C++ class
and properly hiding the secrets inside this implementation instead
of having it spread across various different files.
diff --git a/src/gprs_rlcmac_meas.cpp b/src/gprs_rlcmac_meas.cpp
index 75da835..3229795 100644
--- a/src/gprs_rlcmac_meas.cpp
+++ b/src/gprs_rlcmac_meas.cpp
@@ -20,6 +20,7 @@
#include <gprs_rlcmac.h>
#include <gprs_debug.h>
#include <pcu_l1_if.h>
+#include <tbf.h>
#include <string.h>
#include <errno.h>