mainboard/google: Initial Puff board support

TBD: Workout a way to fold this back into Hatch.

BUG=b:141658115
BRANCH=None
TEST=./util/abuild/abuild -p none -t google/puff -x -a

Change-Id: Icc8b13471e6e0b8cf540c35c712089c3205a3497
Signed-off-by: Edward O'Callaghan <quasisec@chromium.org>
---
A src/mainboard/google/puff/Kconfig
A src/mainboard/google/puff/Kconfig.name
A src/mainboard/google/puff/Makefile.inc
A src/mainboard/google/puff/acpi_tables.c
A src/mainboard/google/puff/board_info.txt
A src/mainboard/google/puff/bootblock.c
A src/mainboard/google/puff/chromeos-16MiB.fmd
A src/mainboard/google/puff/chromeos.c
A src/mainboard/google/puff/chromeos.fmd
A src/mainboard/google/puff/dsdt.asl
A src/mainboard/google/puff/ec.c
A src/mainboard/google/puff/mainboard.asl
A src/mainboard/google/puff/mainboard.c
A src/mainboard/google/puff/ramstage.c
A src/mainboard/google/puff/romstage.c
A src/mainboard/google/puff/smihandler.c
A src/mainboard/google/puff/variants/baseboard/Makefile.inc
A src/mainboard/google/puff/variants/baseboard/devicetree.cb
A src/mainboard/google/puff/variants/baseboard/gpio.c
A src/mainboard/google/puff/variants/baseboard/include/baseboard/acpi/dptf.asl
A src/mainboard/google/puff/variants/baseboard/include/baseboard/ec.h
A src/mainboard/google/puff/variants/baseboard/include/baseboard/gpio.h
A src/mainboard/google/puff/variants/baseboard/include/baseboard/variants.h
A src/mainboard/google/puff/variants/baseboard/memory.c
A src/mainboard/google/puff/variants/puff/Makefile.inc
A src/mainboard/google/puff/variants/puff/gpio.c
A src/mainboard/google/puff/variants/puff/include/variant/acpi/dptf.asl
A src/mainboard/google/puff/variants/puff/include/variant/ec.h
A src/mainboard/google/puff/variants/puff/include/variant/gpio.h
A src/mainboard/google/puff/variants/puff/overridetree.cb
30 files changed, 2,168 insertions(+), 0 deletions(-)