[L] Change in coreboot[master]: drivers/i2c: Add a new RTC RV-3028-C7 from Micro Crystal

[Werner Zeh (Code Review)]

Attention is currently required from: Martin L Roth, Arthur Heymans.

Hello build bot (Jenkins), Mario Scheithauer, Arthur Heymans,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/67099

to look at the new patch set (#4).

Change subject: drivers/i2c: Add a new RTC RV-3028-C7 from Micro Crystal
......................................................................

drivers/i2c: Add a new RTC RV-3028-C7 from Micro Crystal

This patch adds a driver for a new RTC from Micro Crystal. Supported
features are:
 * configure backup voltage switchover via devicetree
 * configure backup capacitor charging mode via devicetree
 * set date if a voltage drop on backup voltage was detected
   to either a user definable (devicetree) or coreboot build date

Change-Id: I37176ea726e50e4e74d409488981d7618ecff8bb
Signed-off-by: Werner Zeh 
---
A src/drivers/i2c/rv3028c7/Kconfig
A src/drivers/i2c/rv3028c7/Makefile.inc
A src/drivers/i2c/rv3028c7/chip.h
A src/drivers/i2c/rv3028c7/rv3028c7.c
A src/drivers/i2c/rv3028c7/rv3028c7.h
5 files changed, 306 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/99/67099/4