net: add Socionext AVE ethernet driver support

Add driver for Socionext AVE ethernet controller that includes MAC and
MDIO bus supporting RGMII/RMII modes.
The driver behaves the ethernet driver model (DM_ETH) with devicetree.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f2cc75f..e88f056 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -362,6 +362,16 @@
 	  This driver implements support for the Fast Ethernet Controller
 	  on MPC8XX
 
+config SNI_AVE
+	bool "Socionext AVE Ethernet support"
+	depends on DM_ETH && ARCH_UNIPHIER
+	select PHYLIB
+	select SYSCON
+	select REGMAP
+	help
+	  This driver implements support for the Socionext AVE Ethernet
+	  controller, as found on the Socionext UniPhier family.
+
 config ETHER_ON_FEC1
 	bool "FEC1"
 	depends on MPC8XX_FEC