char: legacy RTC cleanups

[Arnd Bergmann]

On Wednesday 27 April 2016 12:19:59 Geert Uytterhoeven wrote:
> >
> > Right, so we could skip patches 5 and 6, and instead remove the two
> > headers as we remove the driver. Let's see what the architecture
> > maintainers think about it, at least powerpc actually enables gen_rtc
> > in its defconfig, so it might take a while to move it over.
> 
> FWIW, all PPC defconfigs (except tqm8xx.dts, which is a more recent platform)
> enabling it did that long before my old commit to enable rtc-generic support
> on PPC:
> 
> commit bcd68a70cb0eee556d86d93133aa150319bd9f53
> Author: Geert Uytterhoeven <Geert.Uytterhoeven at sonycom.com>
> Date:   Thu Feb 19 16:50:46 2009 +0100
> 
>     powerpc: Hook up rtc-generic, and kill rtc-ppc

Ah, interesting. I have two observations about that patch:

- you were moving basically in the opposite direction that I am
  trying to bring it now. ;-)

- I see now that four defconfigs (gamecube, powernv, pseries and wii)
  do enable RTC_DRV_GENERIC. For some reason, ppc64_defconfig only
  enables RTC_DRV_DS1307, I assume that is not intentional.

	Arnd