env: Move env_relocate() to env.h

Move env_relocate() over to the new header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

include/env.h

@@ -31,6 +31,14 @@ int env_get_id(void);
  */
 int env_init(void);
 
+/**
+ * env_relocate() - Set up the post-relocation environment
+ *
+ * This loads the environment into RAM so that it can be modified. This is
+ * called after relocation, before the environment is used
+ */
+void env_relocate(void);
+
 /**
  * env_get_f() - Look up the value of an environment variable (early)
  *