configs: net: convert DRIVER_TI_KEYSTONE_NET kconfig

Convert DRIVER_TI_KEYSTONE_NET to Kconfig.

Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
diff --git a/drivers/net/ti/Kconfig b/drivers/net/ti/Kconfig
index 35a6b5d..82bc9f5 100644
--- a/drivers/net/ti/Kconfig
+++ b/drivers/net/ti/Kconfig
@@ -13,3 +13,8 @@
 	bool "TI Davinci EMAC"
 	help
 	   Support for davinci emac
+
+config DRIVER_TI_KEYSTONE_NET
+	bool "TI Keystone 2 Ethernet"
+	help
+	   This driver supports the TI Keystone 2 Ethernet subsystem