Change in coreboot[master]: libpayload: Improve rtc functions

[Patrick Georgi (Code Review)]

Patrick Georgi has uploaded a new patch set (#5) to the change originally created by Patrick Rudolph. ( https://review.coreboot.org/c/coreboot/+/18498 )

Change subject: libpayload: Improve rtc functions
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libpayload: Improve rtc functions

On Lenovo T500 the RTC readings where wrong, as RTC has
different encodings, depending on the statusB register.

Support BCD vs binary RTC format and AM/PM vs 24h RTC format.

Fixes wrong date and time on Lenovo 500.

Change-Id: Id773c33e228973e190a7e14c3d11979678b1a619
Signed-off-by: Patrick Rudolph 
---
M payloads/libpayload/drivers/nvram.c
M payloads/libpayload/include/libpayload.h
2 files changed, 41 insertions(+), 9 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/18498/5