[PATCH 7/7] efi_rtc: probe function error out in case no efi runtime enabled

[Matt Fleming]

On Mon, 22 Sep, at 12:33:29PM, Mark Salter wrote:
> 
> Is this still needed after commit da167ad7638759:
> 
>   rtc: ia64: allow other architectures to use EFI RTC

Umm... we should really look at disabling this for x86, since the EFI
time functions don't work on a bunch of machines I've got here.

And it looks like someone enabled this driver and triggered an oops on
their 32-bit EFI tablet,

  https://bugzilla.kernel.org/show_bug.cgi?id=84241#c21