[RFC][POWERPC] WDT: added support for the WDT Chain driver.

[Detlev Zundel]

Hello Vitaly,

> From: Heiko Schocher <hs at denx.de>
>
> [POWERPC] WDT: added support for the WDT Chain driver.
>
>     This new driver implements a character device with major number 10
>     and minor number 130.  It is a software abstraction of the hardware
>     watchdog with two different APIs.  While the driver periodically
>     triggers the hardware watchdog, the software can setup independent
>     timeout periods.
>
>     More info in Documentation/watchdog/wdt_chain.txt
>
>     Signed-off-by: Heiko Schocher <hs at denx.de>
>     Signed-off-by: Vitaly Bordug <vitb at kernel.crashing.org>
> ---
> This code was (and is) originally residing in DENX public git repo. I
> think it would be useful upstream, to prevent reinventing the same
> thing. 

Thanks a lot for taking an interest in this piece of code.  I would
suggest however that you coordinate with Heiko as he has worked some
more on this driver in the meantime.  This new code however is not in
our repository.  We should start the RFC discussion with current code.

For the casual reader this means, don't invest time into reviewing this
but wait for a cleaned up version instead.

Thanks
  Detlev

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