Split rtems-bsd-shell-netcmds.c

This improves garbage collection by the linker.

rtemsbsd/rtems/rtems-bsd-shell-tcpdump.c

@@ -0,0 +1,20 @@
+/*
+ *  COPYRIGHT (c) 1989-2012.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ */
+
+#include <rtems/netcmds-config.h>
+#include <machine/rtems-bsd-commands.h>
+
+rtems_shell_cmd_t rtems_shell_TCPDUMP_Command = {
+  "tcpdump",                     /* name */
+  "tcpdump [args]",              /* usage */
+  "net",                         /* topic */
+  rtems_bsd_command_tcpdump,     /* command */
+  NULL,                          /* alias */
+  NULL                           /* next */
+};