[PATCH v3] test: dm: add button_cmd test

[Tom Rini]

On Tue, 19 Mar 2024 13:24:42 +0000, Caleb Connolly wrote:

> Add a test for the button_cmd feature. This validates that commands can
> be mapped to two buttons, that the correct command runs based on which
> button is pressed, that only 1 command is run, and that no command runs
> if button_cmd_0_name is wrong or unset.
> 
> Additionally, fix a potential uninitialised variable use caught by these
> tests, the btn variable in get_button_cmd() is assumed to be null if
> button_get_by_label() fails, but it's actually used uninitialised in
> that case.
> 
> [...]

Applied to u-boot/next, thanks!

-- 
Tom