ARM: config: Switch PXA27x platforms to use PXA RTC driver
With the SA1100 and PXA RTC drivers be mutually exclusive and no longer sharing hardware, PXA27x/PXA3xx platforms must use the PXA RTC driver as the SA1100 platform device is no longer registered. This change should be almost transparent to userspace. Former users of pxa-rtc should be aware that 2 RTCs will be available on their kernels, rtc0 being sa1100-rtc and rtc1 being pxa-rtc. Any userspace relying on the fact that rtc0 was pxa-rtc should be fixed. As a consequence: - the first reboot after the switch will have the wrong time, - on dual boot platform where the other OS programs some logic into the sa1100 rtc IP, a lack of fix in userspace, ie. a kernel changing sa1100-rtc thinking it is pxa-rtc could have dire consequence, such as wiping the other OS data partition. (Thanks to Robert Jarmik for help on the above commit text.) Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Daniel Mack <daniel@zonque.org> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Mike Rapoport <mike@compulab.co.il> Cc: Philipp Zabel <philipp.zabel@gmail.com>
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