net: Add MSCC Luton networkd driver.

Add network driver for Microsemi Ethernet switch, it is
present on Luton SoCs.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
diff --git a/drivers/net/mscc_eswitch/Kconfig b/drivers/net/mscc_eswitch/Kconfig
index 2f3c8cc..88e5a97 100644
--- a/drivers/net/mscc_eswitch/Kconfig
+++ b/drivers/net/mscc_eswitch/Kconfig
@@ -8,3 +8,10 @@
 	select PHYLIB
 	help
 	  This driver supports the Ocelot network switch device.
+
+config MSCC_LUTON_SWITCH
+	bool "Luton switch driver"
+	depends on DM_ETH && ARCH_MSCC
+	select PHYLIB
+	help
+	  This driver supports the Luton network switch device.