configs: Re-sync with cmd/Kconfig

Update the config.h and defconfig files for the commands that 8e3c036
converted over to Kconfig

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ip04_defconfig b/configs/ip04_defconfig
index b872dea..b944b07 100644
--- a/configs/ip04_defconfig
+++ b/configs/ip04_defconfig
@@ -9,6 +9,7 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_DNS=y
+CONFIG_CMD_CACHE=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y