Fix build of bsc-nat and GPRS code after include path change

The last patch changed the osmocore include paths, this fixes some build
problems caused by it
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index 43aa212..7fd8641 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -32,8 +32,8 @@
 
 #include <openbsc/db.h>
 #include <osmocom/core/msgb.h>
-#include <osmocom/core/tlv.h>
-#include <osmocom/core/gsm_utils.h>
+#include <osmocom/gsm/tlv.h>
+#include <osmocom/gsm/gsm_utils.h>
 #include <osmocom/core/signal.h>
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/rate_ctr.h>
diff --git a/openbsc/src/gprs/gprs_llc_vty.c b/openbsc/src/gprs/gprs_llc_vty.c
index 050d024..ab52699 100644
--- a/openbsc/src/gprs/gprs_llc_vty.c
+++ b/openbsc/src/gprs/gprs_llc_vty.c
@@ -28,7 +28,7 @@
 
 #include <openbsc/gsm_data.h>
 #include <osmocom/core/msgb.h>
-#include <osmocom/core/tlv.h>
+#include <osmocom/gsm/tlv.h>
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/select.h>
 #include <osmocom/core/rate_ctr.h>
diff --git a/openbsc/src/gprs/gprs_sndcp.h b/openbsc/src/gprs/gprs_sndcp.h
index e9a50be..ec35d7b 100644
--- a/openbsc/src/gprs/gprs_sndcp.h
+++ b/openbsc/src/gprs/gprs_sndcp.h
@@ -2,7 +2,7 @@
 #define _INT_SNDCP_H
 
 #include <stdint.h>
-#include <osmocore/linuxlist.h>
+#include <osmocom/core/linuxlist.h>
 
 /* A fragment queue header, maintaining list of fragments for one N-PDU */
 struct defrag_state {
diff --git a/openbsc/src/gprs/gprs_sndcp_vty.c b/openbsc/src/gprs/gprs_sndcp_vty.c
index a6c0bd3..28fdc63 100644
--- a/openbsc/src/gprs/gprs_sndcp_vty.c
+++ b/openbsc/src/gprs/gprs_sndcp_vty.c
@@ -28,7 +28,7 @@
 
 #include <openbsc/gsm_data.h>
 #include <osmocom/core/msgb.h>
-#include <osmocom/core/tlv.h>
+#include <osmocom/gsm/tlv.h>
 #include <osmocom/core/talloc.h>
 #include <osmocom/core/select.h>
 #include <osmocom/core/rate_ctr.h>