arm64 defconfig: enable Mellanox cards

Mellanox cards are present in several AArch64 servers.
Signed-off-by: NMarcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

arch/arm64/configs/defconfig

@@ -252,6 +252,15 @@ CONFIG_HNS3_ENET=y
 CONFIG_E1000E=y
 CONFIG_IGB=y
 CONFIG_IGBVF=y
+CONFIG_MLX4_EN=m
+CONFIG_MLX4_CORE=m
+CONFIG_MLX4_DEBUG=y
+CONFIG_MLX4_CORE_GEN2=y
+CONFIG_MLX5_CORE=m
+CONFIG_MLX5_CORE_EN=y
+CONFIG_MLX5_EN_ARFS=y
+CONFIG_MLX5_EN_RXNFC=y
+CONFIG_MLX5_MPFS=y
 CONFIG_MVNETA=y
 CONFIG_MVPP2=y
 CONFIG_SKY2=y