Change in coreboot[master]: soc/intel/common/block: Add function to choose best emmc DLL value

[Bora Guvendik (Code Review)]

Hello build bot (Jenkins), Patrick Georgi, Martin Roth, Selma Bensaid, Bora Guvendik, Subrata Banik, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/44495

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

Change subject: soc/intel/common/block: Add function to choose best emmc DLL value
......................................................................

soc/intel/common/block: Add function to choose best emmc DLL value

Given an array of PASS and FAILs, choose and return the middle
index of the largest continuous sequence of PASSes as the
optimum value.

ex:
PASS
FAIL
PASS
PASS <-- optimum
PASS

BUG=b:140124451
TEST=Run emmc dll tuning and check the value chosen.

Change-Id: I5506400aeb7251f1f5b55a1b4cc32efe050b592d
Signed-off-by: Bora Guvendik 
---
M src/soc/intel/common/block/scs/Kconfig
M src/soc/intel/common/block/scs/Makefile.inc
A src/soc/intel/common/block/scs/dll_tuning.c
3 files changed, 89 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/95/44495/4