ath6kl: use WMI to set RSN capabilities

[Kalle Valo]

Alfonso Sánchez-Beato wrote:

> This fixes AP mode when the ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE flag
> is not present in the FW. The id of some WMI commands is also fixed
> (there was an error in the enum order), and a function to set RSN caps
> is added.
> 
> Signed-off-by: Alfonso Sánchez-Beato <alfonso.sanchez-beato at canonical.com>
> Signed-off-by: Kalle Valo <kvalo at codeaurora.org>

Steve, what do you think of this?

-- 
https://patchwork.kernel.org/patch/10338903/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches