[En-Nut-Discussion] Network Link state on at91_emac and others

[Harald Kipp]

Oh, actually I committed a view things recently (2008-08-28):

* arch/arm/dev/at91_emac.c, arch/arm/dev/at91sam7x_emac.c,
arch/arm/dev/ax88796.c, arch/arm/dev/cs8900a.c,
arch/arm/dev/dm9000e.c, arch/avr/dev/eth0cs.c,
arch/avr/dev/eth0rtl.c, arch/avr/dev/lanc111.c,
arch/avr/dev/wlan.c, dev/ppp.c, include/net/if_var.h,
include/net/if.h: Added interface flags, which will be required
to implement Ethernet ioctl functions.

* conf/dev/dev.nut, dev/lan91.c, include/dev/lan91.h:
Added platform independant driver for LAN91 chips. It has been
derived from the AVR version and had been tested for the LAN91C111
only. This is the first Ethernet driver with ioctl support.

* net/ifconfig.c: Make use of ioctl if the driver supports this.