Use git describe to set KERNELVERSION

Change-Id: Id579b19fc38c7ca2b98ad1e87aaec71c070a9178
Signed-off-by: Peter Stuge <peter@stuge.se>
Reviewed-on: http://review.coreboot.org/163
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
1 file changed