Build the Linux kernel with the same amount of jobs as coreboot. Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Change-Id: Ie7af5aef4560b8d4dd840d9c578f8a2a4c387400 Reviewed-on: https://review.coreboot.org/c/coreboot/+/78644 Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>