arm64: defconfig: enable stmmac ethernet to defconfig

This patch enables the CONFIG_STMMAC_ETH to the default arm64 defconfig:

-CONFIG_STMMAC_ETH=m
+CONFIG_STMMAC_ETH=y
+CONFIG_DWMAC_IPQ806X=m
+CONFIG_DWMAC_MESON=m
+CONFIG_DWMAC_ROCKCHIP=m
+CONFIG_DWMAC_SUNXI=m
+CONFIG_DWMAC_SUN8I=m

The STMMAC ethernet controller is on the Stratix10 platform, and thus needs
driver to be in the kernel image for NFS to work.

Signed-off-by: Dinh Nguyen <[email protected]>

Conflicts:
	arch/arm64/configs/defconfig

Author: Dinh Nguyen

arch/arm64/configs/defconfig

@@ -283,7 +283,7 @@ CONFIG_SMC91X=y
 CONFIG_SMSC911X=y
 CONFIG_SNI_AVE=y
 CONFIG_SNI_NETSEC=y
-CONFIG_STMMAC_ETH=m
+CONFIG_STMMAC_ETH=y
 CONFIG_MDIO_BUS_MUX_MMIOREG=y
 CONFIG_AT803X_PHY=m
 CONFIG_MARVELL_PHY=m