configs: mscc_serval: Add network support

Update default config to use network driver for Serval SoCs.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
diff --git a/configs/mscc_serval_defconfig b/configs/mscc_serval_defconfig
index 146188b..753a11a 100644
--- a/configs/mscc_serval_defconfig
+++ b/configs/mscc_serval_defconfig
@@ -25,7 +25,6 @@
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
-# CONFIG_CMD_NFS is not set
 CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDIDS_DEFAULT="nor0=spi_flash"
 CONFIG_MTDPARTS_DEFAULT="mtdparts=spi_flash:1m(UBoot),256k(Env),256k(Env.bk)"
@@ -58,3 +57,8 @@
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
 CONFIG_LZMA=y
+CONFIG_CMD_DHCP=y
+# CONFIG_NET_TFTP_VARS is not set
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_PING=y
+CONFIG_MSCC_SERVAL_SWITCH=y