Convert CONFIG_VSC7385_ENET et al to Kconfig

This converts the following to Kconfig:
   CONFIG_VSC7385_ENET
   CONFIG_VSC9953

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 029bf38..13e434e 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -676,6 +676,12 @@
 	  rates from 10GE to 100GE. This could be present in some of the Xilinx
 	  Versal designs.
 
+config VSC7385_ENET
+	bool "Vitesse 7385 Switch Firmware Upload driver"
+
+config VSC9953
+	bool "Vitesse VSC9953 L2 Switch driver"
+
 config XILINX_EMACLITE
 	select PHYLIB
 	select MII