project-lakitu: use ttyAMA0 as a kernel console on ARM

Pass proper console value in the kernel command. There is
no ttySx on ARM64

BUG=b/179817368
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I60ff82ffe94ec6bd50342b600d0b6817529ae93e
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/14555
Reviewed-by: Ke Wu <mikewu@google.com>
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
diff --git a/project-lakitu/scripts/bootloader_install.sh b/project-lakitu/scripts/bootloader_install.sh
index d517fd5..a12e22d 100755
--- a/project-lakitu/scripts/bootloader_install.sh
+++ b/project-lakitu/scripts/bootloader_install.sh
@@ -248,7 +248,7 @@
 noswap
 loglevel=7
 noinitrd
-console=ttyS0
+console=ttyAMA0
 EOF
 
   local -r script_root="$(readlink -f "$(dirname "${BASH_SOURCE[0]}")")"