x86: Select HAS_PERSISTENT_CLOCK on x86

Select HAS_PERSISTENT_CLOCK on x86 to simplify RTC options
and allow the compiler to remove unused code.

Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
John Stultz 2013-01-15 19:45:19 +00:00
commit e90c83f757