brcm-2.4/brcm47xx: fix typos and indenting in the preinit interface script (thx, cshore)

SVN-Revision: 19339

target/linux/brcm-2.4/base-files/lib/preinit/15_set_preinit_interface_brcm

@@ -1,7 +1,7 @@
-. /etc/functions.sh
+#!/bin/sh
 
 port_net_echo() {
-    [ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null ] {
+	[ -n "$pi_ifname" ] && grep "$pi_ifname" /proc/net/dev >/dev/null && {
 		if [ "$pi_preinit_net_messages" = "y" ] || [ "$pi_failsafe_net_message" = "true" ] && [ "$pi_preinit_no_failsafe_netmsg" != "y" ]; then 
 			netmsg $pi_broadcast "$1"
 		}