net/bonding: set MTU on slave configure
net/bonding: set MTU on slave configure

When a slave is configured make sure that the slave's MTU
matches the bonding's idea of the MTU.

Signed-off-by: Chas Williams <8e10b7fd9feb54c659058e7890a36a5f97dabfd9@att.com>
Acked-by: Radu Nicolau <fa459cf59d47c122ba776e9a6f631c862bf44680@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk