K 10
svn:author
V 6
mizhka
K 8
svn:date
V 27
2017-10-31T12:15:00.879858Z
K 7
svn:log
V 396
[i2c/clock] add support for EPSON RTC-8583

RTC-8583 is time-of-day clock used in some SOHO routers. This clock has
only 2 bits for year values, but thanks to user SRAM it's possible to save
year value and keep it up to date via driver code.

Tested on Planex_MZK-W300NAG (SoC is RT2880)

Submitted by:	Hiroki Mori <yamori83@yahoo.co.jp>
Differential Revision:	https://reviews.freebsd.org/D12833

END