soc: nxp_s32: disable TCP/UDP checksum only if eth driver enabled

Only disable TCP/UDP software checksum if the ethernet
driver enabled. This is to avoid interfere with net tests
which don't need the on board driver to function

Signed-off-by: Dat Nguyen Duy <dat.nguyenduy@nxp.com>

soc/nxp/s32/s32k3/Kconfig.defconfig

@@ -15,15 +15,15 @@ config NUM_IRQS
 config FPU
 	default y
 
-if NET_L2_ETHERNET
+if ETH_DRIVER && NET_L2_ETHERNET
 
 config NET_TCP_CHECKSUM
 	default n
 
 config NET_UDP_CHECKSUM
 	default n
 
-endif # NET_L2_ETHERNET
+endif # ETH_DRIVER && NET_L2_ETHERNET
 
 config CACHE_MANAGEMENT
 	default y

soc/nxp/s32/s32ze/Kconfig.defconfig

@@ -18,7 +18,7 @@ config SYS_CLOCK_HW_CYCLES_PER_SEC
 config MAIN_STACK_SIZE
 	default 1024
 
-if NET_L2_ETHERNET
+if ETH_DRIVER && NET_L2_ETHERNET
 
 # NETC drops TCP/UDP packets with invalid checksum
 config NET_TCP_CHECKSUM
@@ -27,6 +27,6 @@ config NET_TCP_CHECKSUM
 config NET_UDP_CHECKSUM
 	default n
 
-endif # NET_L2_ETHERNET
+endif # ETH_DRIVER && NET_L2_ETHERNET
 
 endif # SOC_SERIES_S32ZE