bonding: create a macro for bond mode and use it

CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/bonding/bond_alb.c
Simple merge

diff --cc drivers/net/bonding/bond_debugfs.c
Simple merge

diff --cc drivers/net/bonding/bond_main.c
Simple merge

diff --cc drivers/net/bonding/bond_netlink.c
Simple merge

diff --cc drivers/net/bonding/bond_procfs.c
Simple merge

diff --cc drivers/net/bonding/bond_sysfs.c
Simple merge

diff --cc drivers/net/bonding/bond_sysfs_slave.c
Simple merge

diff --cc drivers/net/bonding/bonding.h
Simple merge