boards: nxp: mimxrt1170_evk & rt1160: enable M4 CONFIG_NET_L2_ETHERNET

The Ethernet networking stack can run on the M4 core, see
https://community.nxp.com/t5/Zephyr-Project-Knowledge-Base/Zephyr-networking-stack-on-i-MX-RT1170-Cortex-M4-secondary-core/ta-p/2159461

Signed-off-by: Derek Snell <[email protected]>

Author: DerekSnell

boards/nxp/mimxrt1160_evk/Kconfig.defconfig

@@ -34,7 +34,7 @@ config SYS_CLOCK_HW_CYCLES_PER_SEC
 if NETWORKING
 
 config NET_L2_ETHERNET
-	default y if CPU_CORTEX_M7 # No cache memory support is required for driver
+	default y if DT_HAS_NXP_ENET_ENABLED && NETWORKING
 
 endif # NETWORKING
 

boards/nxp/mimxrt1170_evk/Kconfig.defconfig

@@ -37,7 +37,7 @@ endif # DISK_DRIVERS
 if NETWORKING
 
 config NET_L2_ETHERNET
-	default y if CPU_CORTEX_M7 # No cache memory support is required for driver
+	default y if DT_HAS_NXP_ENET_ENABLED && NETWORKING
 
 endif # NETWORKING