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/io_defconfig b/configs/io_defconfig
index 03a2898..f7351a0 100644
--- a/configs/io_defconfig
+++ b/configs/io_defconfig
@@ -8,6 +8,8 @@
 CONFIG_AUTOBOOT_KEYED=y
 CONFIG_AUTOBOOT_STOP_STR=" "
 # CONFIG_CMD_ELF is not set
+CONFIG_LOOPW=y
 # CONFIG_CMD_NFS is not set
+CONFIG_CMD_PING=y
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y