Fix coccicheck warning which recommends to use memdup_user():
drivers/net/wan/lmc/lmc_main.c:497:27-34: WARNING opportunity for memdup_user
Generated by: scripts/coccinelle/memdup_user/memdup_user.cocci
Signed-off-by: NVasyl Gomonovych <gomonovych@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>