net: dsa: realtek: don't default Kconfigs to y

We generally default the vendor to y and the drivers itself
to n. NET_DSA_REALTEK, however, selects a whole bunch of things,
so it's not a pure "vendor selection" knob. Let's default it all
to n.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/realtek/Kconfig

@@ -12,7 +12,6 @@ menuconfig NET_DSA_REALTEK
 config NET_DSA_REALTEK_MDIO
 	tristate "Realtek MDIO connected switch driver"
 	depends on NET_DSA_REALTEK
-	default y
 	help
 	  Select to enable support for registering switches configured
 	  through MDIO.
@@ -20,14 +19,12 @@ config NET_DSA_REALTEK_MDIO
 config NET_DSA_REALTEK_SMI
 	tristate "Realtek SMI connected switch driver"
 	depends on NET_DSA_REALTEK
-	default y
 	help
 	  Select to enable support for registering switches connected
 	  through SMI.
 
 config NET_DSA_REALTEK_RTL8365MB
 	tristate "Realtek RTL8365MB switch subdriver"
-	default y
 	depends on NET_DSA_REALTEK
 	depends on NET_DSA_REALTEK_SMI || NET_DSA_REALTEK_MDIO
 	select NET_DSA_TAG_RTL8_4
@@ -36,7 +33,6 @@ config NET_DSA_REALTEK_RTL8365MB
 
 config NET_DSA_REALTEK_RTL8366RB
 	tristate "Realtek RTL8366RB switch subdriver"
-	default y
 	depends on NET_DSA_REALTEK
 	depends on NET_DSA_REALTEK_SMI || NET_DSA_REALTEK_MDIO
 	select NET_DSA_TAG_RTL4_A