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/dbau1000_defconfig b/configs/dbau1000_defconfig
index c69d404..c3fa26f 100644
--- a/configs/dbau1000_defconfig
+++ b/configs/dbau1000_defconfig
@@ -11,4 +11,5 @@
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
 CONFIG_USE_PRIVATE_LIBGCC=y