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/canmb_defconfig b/configs/canmb_defconfig
index 5caea0d..8d3b476 100644
--- a/configs/canmb_defconfig
+++ b/configs/canmb_defconfig
@@ -1,6 +1,8 @@
 CONFIG_PPC=y
 CONFIG_MPC5xxx=y
 CONFIG_TARGET_CANMB=y
+CONFIG_CMD_ASKENV=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
 CONFIG_CMD_SNTP=y