Change in coreboot[master]: soc/intel/apollolake: add 4Gb and 6Gb dram density

[Jamie Chen (Code Review)]

Attention is currently required from: Jamie Chen, Furquan Shaikh, Kane Chen, Andrey Petrov, Patrick Rudolph.
Hello build bot (Jenkins), Jamie Chen, Furquan Shaikh, Kane Chen, Andrey Petrov, Patrick Rudolph,

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

https://review.coreboot.org/c/coreboot/+/55153

to look at the new patch set (#5).

Change subject: soc/intel/apollolake: add 4Gb and 6Gb dram density
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soc/intel/apollolake: add 4Gb and 6Gb dram density

This patch adds 4gb and 6gb dram density support to APL and GLK.
Because ch0_density = 0 is not appropriate to determine whether
the channel is disabled or not, so ch0_enable and ch1_enable are
provided to turn on/off channel respectively.

BUG=b:178665760
BRANCH=NONE
TEST=build fw and flash to the dut, the dut can boot up successfully.

Change-Id: Ic0d5d14f26a30da7a9caf4ef43d7fac88a4d2bf1
Signed-off-by: Jamie Chen 
---
M src/mainboard/google/octopus/variants/baseboard/memory.c
M src/mainboard/google/reef/variants/baseboard/memory.c
M src/mainboard/google/reef/variants/pyro/memory.c
M src/mainboard/intel/glkrvp/variants/baseboard/memory.c
M src/mainboard/up/squared/romstage.c
M src/soc/intel/apollolake/include/soc/meminit.h
M src/soc/intel/apollolake/meminit.c
7 files changed, 94 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/53/55153/5