linux-atm: add br2684ctl option to specify the netdev name

Add the uci option nameprefix to specifc a target netdev name. Patch the
br2684ctl code to accept and set a netdev name via commandline parameters.

It allows to use the same netdev name for ATM and PTM lines on lantiq
xdsl hardware.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: Mathis Kresin <dev@kresin.me>

package/base-files/files/lib/functions/uci-defaults.sh

@@ -319,6 +319,7 @@ ucidef_add_atm_bridge() {
 	local vci="$2"
 	local encaps="$3"
 	local payload="$4"
+	local nameprefix="$5"
 
 	json_select_object dsl
 		json_select_object atmbridge
@@ -326,6 +327,7 @@ ucidef_add_atm_bridge() {
 			json_add_int vci "$vci"
 			json_add_string encaps "$encaps"
 			json_add_string payload "$payload"
+			json_add_string nameprefix "$nameprefix"
 		json_select ..
 	json_select ..
 }