Move defaults from config_cmd_default.h to Kconfig

This sets the default commands Kconfig to match
include/config_cmd_default.h commands in the common/Kconfig and removes
them from include/configs.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
[trini: rastaban, am43xx_evm_usbhost_boot, am43xx_evm_ethboot updates]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/O2DNT2_defconfig b/configs/O2DNT2_defconfig
index 6bd3cee..a4ead75 100644
--- a/configs/O2DNT2_defconfig
+++ b/configs/O2DNT2_defconfig
@@ -4,4 +4,4 @@
 CONFIG_AUTOBOOT_KEYED=y
 CONFIG_AUTOBOOT_PROMPT="Autobooting in %d seconds, press password to stop\n"
 CONFIG_AUTOBOOT_STOP_STR="++++++++++"
-CONFIG_CMD_NET=y
+# CONFIG_CMD_SETEXPR is not set