Bluetooth: IPSP Sample Doc no match for new path

[lgl88911]

https://github.com/zephyrproject-rtos/zephyr/tree/master/samples/bluetooth/ipsp show:
To test IPSP please take a look at samples/net/README
but I can't find the file

[Vudentz]

Yep, that seems outdated, I will update with the instruction how to use the echo-client which is the only thing we are really using from net-tools.

[lgl88911]

@Vudentz Other question about the doc: Where is bluetooth_6lowpan file, I can't find it in zephyr tree. Thanks!

[Vudentz]

That is on Linux side, that session describes how to setup the Linux box to talk to zephyr.