stmmac: fix DMA channel hang in half-duplex mode
HW does not support Half-duplex mode in multi-queue scenario. Fix it by not advertising the Half-Duplex mode if multi-queue enabled. Signed-off-by: NBhadram Varka <vbhadram@nvidia.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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