wishlist for TCL16

[GNUser]

Hi curaga. If possible, here are 3 features I think would be nice to have in TCL16:

* remove the useless /linuxrc symlink
* implement /usr merge
* turn on support for wifi usb adapters with rt53XX and rt55XX chipsets, which have been working great with the in-kernel rt2800usb driver for years

For third item, the kernel config options are CONFIG_RT2800USB_RT53XX and CONFIG_RT2800USB_RT55XX