Patch for ds1337 i2c driver:

Add code to handle case where board firmware does not start the
RTC.

This patch was contributed by Michael Burian.

Signed-off-by: Michael Burian <dynmail1@gassner-waagen.at>
Signed-off-by: James Chapman <jchapman@katalix.com>

-- 
James Chapman
Katalix Systems Ltd
http://www.katalix.com
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