brcm47xx: run ifup before starting the switch

In addition check_module is not needed, nobody checks the return value.

SVN-Revision: 34993

target/linux/brcm47xx/base-files/lib/preinit/05_init_interfaces_brcm

@@ -4,6 +4,8 @@ set_preinit_iface() {
 	ifname=eth0
 
 	insmod diag
+	insmod hwmon
+	insmod tg3
 
 	# hardware specific overrides
 	case "$(cat /proc/diag/model)" in
@@ -26,8 +28,6 @@ check_module () {
 }
 
 init_iface() {
-	check_module hwmon
-	check_module tg3
 	insmod switch-core
 	check_module switch-robo || check_module switch-adm  || {
 	  check_module bcm57xx activate_gpio=0x4 && cpu_port="8u*"