Change in coreboot[master]: google/cyan: convert to variant configuration

[Matt DeVillier (Code Review)]

Hello Paul Menzel, build bot (Jenkins), Martin Roth,

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

https://review.coreboot.org/21126

to look at the new patch set (#3).

Change subject: google/cyan: convert to variant configuration
......................................................................

google/cyan: convert to variant configuration

Setup cyan to be the baseboard for other Google Braswell
boards, to be added in subsequent commits.

This commit keeps code common to all Google Braswell boards in
the cyan baseboard, separates out the board-specific bits into
the new cyan variant, and defines the I2C ACPI devices such that
they can be easily reused for other variants. It also switches
the trackpad/touchscreen interrupts from edge to level, for
better performance/compatibility as was done with all previous
Google boards.

Additionally, a few hardcoded values were replaced with variables,
and a few typos/formatting errors were corrected.

Change-Id: Iabbbad16efa9cfa79338f4e94d0771779900d8d9
Signed-off-by: Matt DeVillier 
---
M src/mainboard/google/cyan/Kconfig
M src/mainboard/google/cyan/Kconfig.name
M src/mainboard/google/cyan/Makefile.inc
A src/mainboard/google/cyan/acpi/codec_maxim.asl
M src/mainboard/google/cyan/acpi/dptf.asl
M src/mainboard/google/cyan/acpi/mainboard.asl
M src/mainboard/google/cyan/acpi/superio.asl
A src/mainboard/google/cyan/acpi/touchscreen_elan.asl
A src/mainboard/google/cyan/acpi/trackpad_elan.asl
M src/mainboard/google/cyan/board_info.txt
M src/mainboard/google/cyan/boardid.c
M src/mainboard/google/cyan/ramstage.c
M src/mainboard/google/cyan/smihandler.c
R src/mainboard/google/cyan/variants/cyan/Makefile.inc
A src/mainboard/google/cyan/variants/cyan/board_info.txt
R src/mainboard/google/cyan/variants/cyan/devicetree.cb
R src/mainboard/google/cyan/variants/cyan/gpio.c
A src/mainboard/google/cyan/variants/cyan/include/variant/acpi/dptf.asl
A src/mainboard/google/cyan/variants/cyan/include/variant/acpi/mainboard.asl
R src/mainboard/google/cyan/variants/cyan/include/variant/onboard.h
R src/mainboard/google/cyan/variants/cyan/spd.c
21 files changed, 380 insertions(+), 267 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/26/21126/3