Missing parts of previous commit

grub-core/Makefile.core.def

@@ -162,6 +162,8 @@ kernel = {
   arm_coreboot = bus/fdt.c;
   arm_coreboot = term/ps2.c;
   arm_coreboot = term/arm/pl050.c;
+  arm_coreboot = term/arm/cros.c;
+  arm_coreboot = term/arm/cros_ec.c;
   arm_coreboot = bus/spi/rk3288_spi.c;
   arm_coreboot = commands/keylayouts.c;
   arm_coreboot = kern/arm/coreboot/dma.c;

grub-core/kern/arm/coreboot/init.c

@@ -135,6 +135,7 @@ grub_machine_init (void)
   grub_rk3288_spi_init ();
 
   grub_machine_timer_init ();
+  grub_cros_init ();
   grub_pl050_init ();
 }