cmd/Kconfig: Add some missing dependencies

With the migration to Kconfig complete, we can now add some previously
missing dependencies to some commands.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/env/Kconfig b/env/Kconfig
index 1f8e90af..9641abe 100644
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -312,7 +312,7 @@
 
 config ENV_IS_IN_ONENAND
 	bool "Environment is in OneNAND"
-	depends on !CHAIN_OF_TRUST
+	depends on !CHAIN_OF_TRUST && CMD_ONENAND
 	help
 	  Define this if you want to put your local device's environment in
 	  OneNAND.