Use internal <osmocom/core/talloc.h> everywhere

Change-Id: If40e1eefcfa88a2b376becfe057836acdd3a1cc2
diff --git a/src/gsm/apn.c b/src/gsm/apn.c
index a7074ea..4800702 100644
--- a/src/gsm/apn.c
+++ b/src/gsm/apn.c
@@ -24,8 +24,8 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
-#include <talloc.h>
 
+#include <osmocom/core/talloc.h>
 #include <osmocom/gsm/apn.h>
 
 #define APN_OI_GPRS_FMT	"mnc%03u.mcc%03u.gprs"
diff --git a/src/vty/talloc_ctx_vty.c b/src/vty/talloc_ctx_vty.c
index dcb1c9b..ea8ebe7 100644
--- a/src/vty/talloc_ctx_vty.c
+++ b/src/vty/talloc_ctx_vty.c
@@ -22,8 +22,8 @@
 #include <stdio.h>
 #include <regex.h>
 #include <string.h>
-#include <talloc.h>
 
+#include <osmocom/core/talloc.h>
 #include <osmocom/vty/command.h>
 #include <osmocom/vty/vty.h>
 
diff --git a/utils/osmo-ns-dummy-vty.c b/utils/osmo-ns-dummy-vty.c
index f4a270c..2e59b11 100644
--- a/utils/osmo-ns-dummy-vty.c
+++ b/utils/osmo-ns-dummy-vty.c
@@ -21,7 +21,6 @@
  *
  */
 
-#include <talloc.h>
 #include <errno.h>
 #include <string.h>
 #include <stdio.h>
@@ -30,6 +29,7 @@
 #include <inttypes.h>
 
 
+#include <osmocom/core/talloc.h>
 #include <osmocom/core/select.h>
 #include <osmocom/core/application.h>
 #include <osmocom/core/stats.h>