K 10
svn:author
V 8
jhibbits
K 8
svn:date
V 27
2017-11-08T01:28:20.568048Z
K 7
svn:log
V 414
DS1307: Add the mcp7941x enable bit

Summary:
Existing code recognizes the mcp7941x RTC, but this RTC has an
enable bit at the same location as the "Clock Halt" bit on the ds1307, with an
opposite assertion (set == on, whereas CH set == clock stopped).  Thus the
current code halts the clock, with no way to enable it.

Reviewed By:	ian
MFC after:	2 weeks
Differential Revision: https://reviews.freebsd.org/D12961

END