chromeos mainboards: remove chromeos.asl

Use the ACPI generator for creating the Chrome OS gpio
package. Each mainboard has its own list of Chrome OS
gpios that are fed into a helper to generate the ACPI
external OIPG package.  Additionally, the common
chromeos.asl is now conditionally included based on
CONFIG_CHROMEOS.

Change-Id: I1d3d951964374a9d43521879d4c265fa513920d2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15909
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
diff --git a/src/mainboard/intel/emeraldlake2/mainboard.c b/src/mainboard/intel/emeraldlake2/mainboard.c
index a0fd9e8..654b1de 100644
--- a/src/mainboard/intel/emeraldlake2/mainboard.c
+++ b/src/mainboard/intel/emeraldlake2/mainboard.c
@@ -28,12 +28,14 @@
 #include <arch/interrupt.h>
 #include <boot/coreboot_tables.h>
 #include <southbridge/intel/bd82x6x/pch.h>
+#include <vendorcode/google/chromeos/chromeos.h>
 
 // mainboard_enable is executed as first thing after
 // enumerate_buses().
 
 static void mainboard_enable(device_t dev)
 {
+	dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
 	install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_EDP, GMA_INT15_PANEL_FIT_CENTERING, GMA_INT15_BOOT_DISPLAY_DEFAULT, 0);
 }