drivers: ethernet: DSA supported on ETH_NXP_ENET

I have tested the DSA support with ETH_NXP_ENET driver and it
works, so marking it as supported by adding it to the dependency
list for the DSA feature.

Signed-off-by: Declan Snyder <[email protected]>

Author: decsny

drivers/ethernet/Kconfig.dsa

@@ -6,7 +6,7 @@
 
 menuconfig NET_DSA
 	bool "Distributed Switch Architecture support"
-	depends on ETH_MCUX || ETH_SAM_GMAC || ETH_STM32_HAL
+	depends on ETH_MCUX || ETH_SAM_GMAC || ETH_STM32_HAL || ETH_NXP_ENET
 	help
 	  Enable Distributed Switch Architecture support. For now it
 	  only supports Kinetics and STM32 ENET drivers.