[Buildroot] [PATCH] package/powertop: add missing headers for musl

[Thomas Petazzoni]

Dear Romain Naour,

On Sat,  8 Aug 2015 18:39:13 +0200, Romain Naour wrote:
> Reported upstream:
> https://github.com/fenrus75/powertop/pull/20

From https://github.com/fenrus75/powertop: "The Linux PowerTOP tool --
please post patches to the mailing list instead of using github pull
requests".

Other than that, patch applied, thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com