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/M5249EVB_defconfig b/configs/M5249EVB_defconfig
index 9bc8da9..f06379f 100644
--- a/configs/M5249EVB_defconfig
+++ b/configs/M5249EVB_defconfig
@@ -4,3 +4,4 @@
 CONFIG_LOOPW=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NET is not set
+CONFIG_CMD_CACHE=y