Fix the 0x0x prefix in an integer constant.

In this case, while at it, also fix a typo (s/unitcast/unicast/).
Signed-off-by: NAntonio Ospite <ao2@ao2.it>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: netdev@vger.kernel.org
Signed-off-by: NDavid S. Miller <davem@davemloft.net>