Instead of writing to the source tree (which we should generally avoid),
copy the pre-generated files (from lex and yacc) to $(objutil). Adapt
include paths and rules so they're found.
Change-Id: Id33be6d1dccf9a1b5857a29c55120dcc8f8db583
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10252
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>