net: core: Fix kernel-doc for call_netdevice_notifiers_info()

Remove the @dev comment, since we do not have a net_device argument, fixes the
following kernel doc warning: /net/core/dev.c:1707: warning: Excess function
parameter 'dev' description in 'call_netdevice_notifiers_info'

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>