In function brcmf_add_if() an error message is printed
upon alloc_netdev() failure. The allocation failure itself
spews enough info in the log so remove the error message.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPiotr Haber <phaber@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>