Change in coreboot[master]: mainboard/google/kahlee: Enable elog in Kconfig

[John E. Kabat Jr. (Code Review)]

Hello build bot (Jenkins),

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

https://review.coreboot.org/22636

to look at the new patch set (#2).

Change subject: mainboard/google/kahlee: Enable elog in Kconfig
......................................................................

mainboard/google/kahlee: Enable elog in Kconfig

- Change kahlee/Kconfig to enable elog and save the boot count in cmos.
- Change soc/amd/common/Makefile to not include common/spi.c unless S3
is enabled.
- Change soc/amd/stoneyridge/Kconfig to set BOOT_DEVICE_SUPPORTS_WRITES

BUG=b:65485690
TEST=Build & boot kahlee.
     WIP - More testing to follow with boot to ChromeOS.

Change-Id: I595a27ac27daa42c2499de1a343bc30be9a89fa6
Signed-off-by: John E. Kabat Jr 
---
M src/mainboard/google/kahlee/Kconfig
M src/soc/amd/common/Makefile.inc
M src/soc/amd/stoneyridge/Kconfig
3 files changed, 17 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/36/22636/2