Patch GPIO for Xscale PXA250/270

[smesgr <smesgr%gmail.com@localhost>]

Hi everyone,

I have developed an patch to add GPIO functions to the existing Xscale 
GPIO driver. I'm not sure how usefull this is for other evbarm, zaurus 
or the slug. But If you want to feel free to test the patch submitted in 
the PR:

https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=52163

please don't forget to add a "gpio* at gpiobus?" into your kernel config 
otherwise the GPIO are still not accessible from gpioctl application. As 
described in the man page only GPIO which aren't used by other drivers 
(e.g. lcd, cf card etc) can be used by gpioctl. Sadly the application 
isn't capable of printing the supported flags for pins even through the 
kernel interface can return this information.

Best Regards

Stephan