vboot_reference: shortcut for enable earlycon and serial console

Add a shortcut to enable and disable earlycon and serial console.

Earlycon requires to setup the correct parameter in stdout-path for
ARM/ARM64 or SPCR table for x86.

BRANCH=none
BUG=b:168171144
TEST=./make_dev_ssd.sh -i  $image --enable_earlycon (--disable_console)

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Change-Id: Ifc39c825bf0830bca9d72668b8451aff64708071
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2423643
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
1 file changed