Peter Tyser authored Oct 25, 2009 and Wolfgang Denk committed Oct 27, 2009

The editenv command can be used to edit an environment variable.
Editing an environment variable is useful when one wants to tweak an
existing variable, for example fix a typo or change the baudrate in the
'bootargs' environment variable.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>