[RESEND] powerpc/configs: enable RTC class support

[Michael Ellerman]

On Fri, 2015-03-07 at 05:11:20 UTC, Vaibhav Jain wrote:
> A working rtc kernel driver is needed so that hwclock can synchronize
> system clock to rtc during shutdown/boot. We already have a powernv
> platform rtc driver located at drivers/rtc/rtc-opal.c. However it depends
> on CONFIG_RTC_CLASS which is disabled by default. Hence the driver isn't
> enabled and not compiled for the powernv kernel.
> 
> We fix this by enabling rtc class support in pseries defconfig which
> enables this driver and compiles it into the pseries kernel. In case
> CONFIG_PPC_POWERNV is not enabled we fallback to 'Generic RTC support'
> driver which emulates the legacy 'PC RTC driver'.

You still haven't told me what happens on a pseries machine when this is
applied.

cheers