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/MigoR_defconfig b/configs/MigoR_defconfig
index 3255ed2..57b7db4 100644
--- a/configs/MigoR_defconfig
+++ b/configs/MigoR_defconfig
@@ -14,5 +14,6 @@
 # CONFIG_CMD_ITEST is not set
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_PING=y
 # CONFIG_CMD_MISC is not set
 CONFIG_USE_PRIVATE_LIBGCC=y