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/xilinx-ppc405-generic_defconfig b/configs/xilinx-ppc405-generic_defconfig
index edfcc20..9d4b137 100644
--- a/configs/xilinx-ppc405-generic_defconfig
+++ b/configs/xilinx-ppc405-generic_defconfig
@@ -8,6 +8,7 @@
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="xlx-ppc405:/# "
 # CONFIG_CMD_IMLS is not set
+CONFIG_LOOPW=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NET is not set
 # CONFIG_CMD_NFS is not set