Combine Baytrail ChromeOS devices using variant scheme

Combine existing boards google/enguarde and google/ninja using
their common reference board google/rambi as a baseboard.

Variants contain board specific data:
 - DPTF ACPI components
 - I2C ACPI devices
 - RAM config / SPD data
 - devicetree config
 - GPIOs
 - board-specific HW components (e.g., LAN)

Additionally, some minor cleanup/changes were made:
 - remove unused ACPI trackpad/touchscreen devices
 - correct I2C addresses in SMBIOS entries
 - clean up comment formatting
 - remove ACPI device for unused light sensor
 - switch I2C ACPI devices from edge to level triggered interrupts,
   for better compatibility/functionality (and to be consistent
   with other recently-upstreamed ChromeOS devices)

The existing enguarde and ninja boards are removed.

Variant setup modeled after google/auron

Change-Id: Iae7855af9a224fd4cb948b854494e39b545ad449
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/18129
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 10 insertions, 5 deletions

diff --git a/src/mainboard/google/rambi/Makefile.inc b/src/mainboard/google/rambi/Makefile.inc
index 65221acfaa..b08002df18 100644
--- a/src/mainboard/google/rambi/Makefile.inc
+++ b/src/mainboard/google/rambi/Makefile.inc
@@ -13,13 +13,18 @@
 ## GNU General Public License for more details.
 ##
 
-subdirs-y += spd
-
-romstage-y += chromeos.c
-ramstage-y += chromeos.c
-ramstage-y += gpio.c
+romstage-$(CONFIG_CHROMEOS) += chromeos.c
+ramstage-$(CONFIG_CHROMEOS) += chromeos.c
 ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC) += ec.c
 ramstage-y += irqroute.c
 ramstage-y += w25q64.c
 
 smm-$(CONFIG_HAVE_SMI_HANDLER) += mainboard_smi.c
+
+ramstage-y += variants/$(VARIANT_DIR)/gpio.c
+
+ramstage-$(CONFIG_BOARD_GOOGLE_NINJA) += variants/$(VARIANT_DIR)/lan.c
+
+subdirs-y += variants/$(VARIANT_DIR)
+
+CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/include