romcc: Allow adding non-existent paths to include path

This models gcc's (and other compilers') behavior to not bail
out with an error when one of the include paths does not exist.

Change-Id: Ic93a55cea6b32516fd76da9b49abe7b990829889
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/12469
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
1 file changed