arm64: a37xx: Enable Marvell ETH PHY support

Enable support for Marvell Ethernet PHYs on A37xx platforms
Signed-off-by: NKonstantin Porotchkin <kostap@marvell.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Igal Liberman <igall@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: NStefan Roese <sr@denx.de>

include/configs/mvebu_armada-37xx.h

@@ -92,6 +92,7 @@
 #define CONFIG_PHY_GIGE		/* GbE speed/duplex detect */
 #define CONFIG_ARP_TIMEOUT	200
 #define CONFIG_NET_RETRY_COUNT	50
+#define CONFIG_PHY_MARVELL
 
 /* USB 2.0 */
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3