lantiq: xrx200: rename nas0/ptm0 to dsl0

This change makes it possible to configure the wan/dsl ppp interface
settings independantly from the used TC-Layer (ATM/PTM).

Now you can move a device from an ADSL/ATM port to an VDSL/PTM port
without any configuration changes for example.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
[use the dsl0 interface name for the default netdev trigger in 01_led,
add ip dependency]
Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/lantiq/base-files/etc/board.d/01_leds

@@ -21,7 +21,7 @@ led_usb2="$(lantiq_get_dt_led usb2)"
 led_dsl="$(lantiq_get_dt_led dsl)"
 [ -n "$led_dsl" ] && {
 	interface="nas0"
-	lantiq_is_vdsl_system && interface="ptm0"
+	lantiq_is_vdsl_system && interface="dsl0"
 
 	led_internet="$(lantiq_get_dt_led internet)"
 	if [ -n "$led_internet" ]; then

target/linux/lantiq/base-files/etc/board.d/02_network

@@ -199,7 +199,7 @@ ls /lib/modules/$(uname -r)/ltq_atm* 1> /dev/null 2>&1 && \
 	ucidef_add_atm_bridge "$vpi" "$vci" "$encaps" "$payload"
 
 if lantiq_is_vdsl_system; then
-	interface_wan="ptm0"
+	interface_wan="dsl0"
 	ucidef_add_vdsl_modem "$annex" "$tone" "$xfer_mode"
 else
 	interface_wan="nas0"