Battery Backed RTC Implementation#123
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mmccall10 wants to merge 1 commit intonerves-time:mainfrom
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NervesTime.Ntpdto synchronize can cause unnecessary delay with a battery backed clock. If it is known that the device has a battery backed rtc allow that to be configured. This PR also adds a synchronized check to the system time. When usingBatterBackedTimethe rtc will be in sync on start, permittingNervesTime.synchronized?/0to evaluate true even if NTP has not been synchronized.