Rename tun_if.{c,h} => tuntap_if.c{c,h}

The next commit introduces functions to also manage TAP interfaces.

openair2/SDAP/nr_sdap/nr_sdap.c

@@ -29,7 +29,7 @@
 #include "common/utils/LOG/log.h"
 #include "errno.h"
 #include "rlc.h"
-#include "tun_if.h"
+#include "tuntap_if.h"
 #include "system.h"
 
 static void reblock_tun_socket(int fd)

openair2/SDAP/nr_sdap/nr_sdap_entity.c

@@ -31,7 +31,7 @@
 #include "gtpv1_u_messages_types.h"
 #include "intertask_interface.h"
 #include "rlc.h"
-#include "tun_if.h"
+#include "tuntap_if.h"
 #include "nr_sdap.h"
 
 #define NO_SDAP_HEADER 0