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/fo300_defconfig b/configs/fo300_defconfig
index dbf0ef5..b8e5c80 100644
--- a/configs/fo300_defconfig
+++ b/configs/fo300_defconfig
@@ -2,4 +2,4 @@
 CONFIG_MPC5xxx=y
 CONFIG_TARGET_TQM5200=y
 CONFIG_SYS_EXTRA_OPTIONS="FO300"
-CONFIG_CMD_NET=y
+# CONFIG_CMD_SETEXPR is not set