From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ben Dooks <ben-linux@fluff.org>
Subject: GPIO update to allow code to get at gpio_chip
Date: Fri,  8 Jan 2010 06:32:27 +0000
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Allowing gpiolib implementations to get at the gpio_chip from the
gpio number is useful to allow gpiolib gpio numbering to be used
for other gpio purposes such as changing pin configuration.

The following patch exports this information. A patch showing the
reason for my wanting this can be supplied on request.