configs: Re-sync almost all of cmd/Kconfig

This syncs up the current cmd/Kconfig and include/configs/ files with the
only exception being CMD_NAND.  Due to how we have used this historically
we need to take further care here when converting.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/smdk2410_defconfig b/configs/smdk2410_defconfig
index 66c2034..39375de 100644
--- a/configs/smdk2410_defconfig
+++ b/configs/smdk2410_defconfig
@@ -2,4 +2,7 @@
 CONFIG_TARGET_SMDK2410=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="SMDK2410 # "
+CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_PING=y