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/bf538f-ezkit_defconfig b/configs/bf538f-ezkit_defconfig
index 5ca81e8..2c71498 100644
--- a/configs/bf538f-ezkit_defconfig
+++ b/configs/bf538f-ezkit_defconfig
@@ -8,5 +8,6 @@
 CONFIG_CMD_PING=y
 CONFIG_CMD_SNTP=y
 CONFIG_CMD_DNS=y
+CONFIG_CMD_CACHE=y
 # CONFIG_REGEX is not set
 CONFIG_LIB_RAND=y