Only add etc/ps2-keyboard-spinup when not updating an image

Without this motherboards that requires a non zero timeout for ps2
keyboards on SeaBIOS don't build when CONFIG_UPDATE_IMAGE is set.

An alternative way to achieve this file would be to include a cbfsfile
instead of calling cbfstool. That way the file gets updated/added both
both image update and regular build. A difficulty of that approach is
that it needs to convert a decimal to a binary in little endian
representation, which is not a trivial thing to do in a Makefile.

Change-Id: Icafba8d3e279a2e70e607abba81e3dbebfb55e4b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/18231
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed