[U-Boot] [PATCH v2] test: py: Add cmd_echo dependency

[Stephen Warren]

On 05/15/2017 06:29 AM, Michal Simek wrote:
> There is missing dependency on echo command. Mark tests which requires
> echo.

Reviewed-by: Stephen Warren <swarren at nvidia.com>

It'd be good to update test_hush_if_test.py too though, even if separately.