net: stmmac: add dwmac-4.20a compatible

Manage dwmac-4.20a version from synopsys

Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christophe Roullier 2018-05-25 09:46:40 +02:00 • committed by David S. Miller
commit 026e57585f