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/cm-bf561_defconfig b/configs/cm-bf561_defconfig
index 086a05a..b6e711e 100644
--- a/configs/cm-bf561_defconfig
+++ b/configs/cm-bf561_defconfig
@@ -5,5 +5,6 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_DNS=y
+CONFIG_CMD_CACHE=y
 CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED=y
 CONFIG_LIB_RAND=y