OCP Delta Lake is developed and validated against LinuxBoot payload. Need to put the respective binary blobs in site-local/deltalake to build the final coreboot image. Add LINUX_COMMAND_LINE for LinuxBoot payload kernel cmdline, CPU_UCODE_BINARIES for CPU microcode binary, CONSOLE_SERIAL_57600 is the serial baud rate used by OCP Delta Lake, DEFAULT_CONSOLE_LOGLEVEL_4 is for a faster boot time. Tested=On OCP Delta Lake it can boot up target CentOS 8 GNU/Linux OS. Change-Id: Ib494e4170a7ebb445d9e11df83c370b40a9e5194 Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55058 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>