Update header includes
Many files include unnecessary headers and don't include headers which
are actually used. Because of that combined with the fact that OsmoPCU
is a mixture of C and C++, it makes it hard to modularize code. Fix
this (using iwyu [1] tool):
* add missing headers
* remove unused headers
[1] https://include-what-you-use.org/
Related: OS#1539
Change-Id: I8c9f488a43b099c72b2d30d3245e7ba50872fc00
diff --git a/src/gprs_bssgp_pcu.cpp b/src/gprs_bssgp_pcu.cpp
index a86e09d..e0d756a 100644
--- a/src/gprs_bssgp_pcu.cpp
+++ b/src/gprs_bssgp_pcu.cpp
@@ -21,8 +21,10 @@
#include <gprs_rlcmac.h>
#include <gprs_bssgp_pcu.h>
#include <pcu_l1_if.h>
+#include <gprs_debug.h>
#include <bts.h>
#include <tbf.h>
+#include <gprs_coding_scheme.h>
#define BSSGP_TIMER_T1 30 /* Guards the (un)blocking procedures */
#define BSSGP_TIMER_T2 30 /* Guards the reset procedure */