console/: add missing license headers

These were copied from the linux kernel, so get the standard corboot GPL
v2 header.

Change-Id: I27ef3326cc42b7e005f94c8b4fd355012a89561d
Signed-off-by: Damien Roth <yves.r.roth@gmail.com>
Reviewed-on: https://review.coreboot.org/13023
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2 files changed