[PATCH] dt: pinctrl: Document device tree binding

[Shawn Guo]

On Fri, Mar 09, 2012 at 11:14:33AM -0700, Stephen Warren wrote:
> The core pin controller bindings define:
> * The fact that pin controllers expose pin configurations as nodes in
>   device tree.
> * That the bindings for those pin configuration nodes is defined by the
>   individual pin controller drivers.
> * A standardized set of properties for client devices to define numbered
>   or named pin configuration states, each referring to some number of the
>   afore-mentioned pin configuration nodes.
> * That the bindings for the client devices determines the set of numbered
>   or named states that must exist.
> 
> Signed-off-by: Stephen Warren <swarren at wwwdotorg.org>

Acked-by: Shawn Guo <shawn.guo at linaro.org>