net/mlxfw: fix spelling mistake: "progamming" -> "programming"

There is a spelling mistake in a literal string. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>