Update libosmogsm deprecated include

The previous gprs/protocol/gsm_04_60.h header from libosmogsm was
misleading because it was placed in the subdirectory used by libosmogb,
and hence was recently deprecated in favour of gsm/protocol/gsm_04_60.h.
Let's follow the pragma message advising to move to the new header file.

Depends: libosmocore 0158b05337a825352d9fd7f074170b686e9fd1e5
Change-Id: I027abbf3ed4c71331000565af1ef4f08f10cfafc
diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp
index 0b2e868..cc62bc2 100644
--- a/tests/tbf/TbfTest.cpp
+++ b/tests/tbf/TbfTest.cpp
@@ -43,7 +43,7 @@
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/utils.h>
 #include <osmocom/vty/vty.h>
-#include <osmocom/gprs/protocol/gsm_04_60.h>
+#include <osmocom/gsm/protocol/gsm_44_060.h>
 #include <osmocom/gsm/l1sap.h>
 #include <osmocom/core/fsm.h>
 }