This patch additional information to the nodewatcher XML:
- wlan_channel: Channel of interface (number only)
- wlan_ssid: SSID available through iw dev
- wlan_type: Type of interface (AP, mesh, IBSS)
- wlan_width: Width of frequency band (20 vs. 40 MHz, number only)

The nodewatcher file from this patch can be copied manually to
devices with older firmware.

The patch includes some comment typo fixes.

Signed-off-by: Adrian Schmutzler <[email protected]>
Tested-by: Adrian Schmutzler <[email protected]>
Reviewed-by: Fabian Bläse <[email protected]>