[bugfix]modify for ethernet sleep for GSW

Change-Id: Ia9aca34d7b66f0ee205ec91dae7ed05f9f09698c
diff --git a/src/kernel/linux/v4.19/drivers/net/phy/marvell-88q.c b/src/kernel/linux/v4.19/drivers/net/phy/marvell-88q.c
index 336e323..592a388 100755
--- a/src/kernel/linux/v4.19/drivers/net/phy/marvell-88q.c
+++ b/src/kernel/linux/v4.19/drivers/net/phy/marvell-88q.c
@@ -150,6 +150,8 @@
 	phy_write(phydev, MII_ADDR_C45 | 0x078032, 0x2020);
 	phy_write(phydev, MII_ADDR_C45 | 0x078031, 0xA28);
 	phy_write(phydev, MII_ADDR_C45 | 0x078031, 0xC28);
+
+	phy_write(phydev, MII_ADDR_C45 | 0x038027, 0x1);//TC10 sleep/wakeup capability support
 	q2110_timing_init(phydev);
 
 	q2110_dts_init(phydev);