Replace EXTRA_CFLAGS with ccflags-y. Signed-off-by: matt mooney <mfm@muteddisk.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Michal Marek <mmarek@suse.cz>