qosmngr: do not limit number of queues to 4 for BCM68880

also remove unused check of /proc/socinfo

qosmngr/files/broadcom/etc/uci-defaults/60-qos_config_generate

@@ -9,7 +9,7 @@ queue_num=8
 
 populate_no_of_queue(){
 	case $cpu_model in
-		BCM68*) queue_num=4;;
+		BCM68[3,4,5]*) queue_num=4 ;;
 	esac
         if grep -qE '[0-9]+ archer$' /proc/devices; then
                 queue_num=4

qosmngr/files/broadcom/lib/qos/qos.sh

@@ -1231,7 +1231,6 @@ configure_qos() {
 
 reload_qos() {
 	local service_name="$1"
-	local cpu_model="$(cat /proc/socinfo  | grep 'SoC Name' | cut -d':' -f2)"
 
 	if [ -z "$service_name" ]; then
 		configure_qos