tree 0ac67c22ac04d3eb58ac89ea31594b179d554860
parent a67fa2657a12e9d2d982988f8b693ab3bd135176
author dp-arm <dimitris.papastamos@arm.com> 1473929930 +0100
committer dp-arm <dimitris.papastamos@arm.com> 1473929930 +0100

fiptool: Invoke command specific usage function

Instead of always calling the top level usage function when an
error is detected, call the command-specific usage function.

For example running `fiptool create` will produce the same output
as `fiptool help create`.  This is more convenient for the user
when they make a mistake.

Change-Id: I60178ab89d47adf93cdfe6d8b5d5f778a5ea3bca