Move modem_set_carrier to crosh from crosh-workarounds

bin/crosh

 #!/bin/dash
 # Copyright (c) 2009-2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 TRY_BASH=1
 if echo "$@" | grep -q -- "--dash"; then
   TRY_BASH=0
 fi
 
@@ skipping 36 matching lines @@
 
  ff_debug [<tag_expr>] [--help] [--list_valid_tags] [--reset]
   Add and remove flimflam debugging tags.
 
  help
   Display this help.
 
  modem <command> [args...]
   Interact with the 3G modem. Run "modem help" for detailed help.
 
+ modem_set_carrier carrier-name
+  Configures the modem for the specified carrier.
+
  network_logging <wifi | cellular | ethernet>
   A function that enables a predefined set of tags useful for
   debugging the specified device.
 
  network_diag
   A function that performs a suite of network diagnostics.  Saves a copy
   of the output to your download directory.
 
  ping [-c count] [-i interval] [-n] [-s packet-size] [-W wait-time] <destination>
   Send ICMP ECHO_REQUEST packets to a network host.  If <destination> is "gw"
@@ skipping 336 matching lines @@
 cmd_top() {
   # -s is "secure" mode, which disables kill, renice, and change display/sleep
   # interval.
   top -s
 }
 
 cmd_modem() {
   /usr/bin/modem "$@"
 }
 
+cmd_modem_set_carrier() {
+  /usr/bin/modem_set_carrier "$@"
+}
+
 cmd_set_apn() {
   /usr/bin/set_apn "$@"
 }
 
 substr() {
   local str="$1"
   local start="$2"
   local end="$3"
 
   if [ "$IS_BASH" = "1" ]; then
@@ skipping 81 matching lines @@
   done
 }
 
 INPUTRC="$(dirname "$0")/inputrc.crosh"
 HISTFILE="$HOME/.crosh_history"
 shell_history -r $HISTFILE
 
 repl
 
 shell_history -w $HISTFILE