arm: kirkwood: ib62x0: make use of defconfig

Signed-off-by: Luka Perkov <luka.perkov@sartura.hr>
diff --git a/configs/ib62x0_defconfig b/configs/ib62x0_defconfig
index 194ef02..19cbfd5 100644
--- a/configs/ib62x0_defconfig
+++ b/configs/ib62x0_defconfig
@@ -5,3 +5,8 @@
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_NAND=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_USB=y