Otherwise rename() fails when used across filesystem
boundaries.
Change-Id: I22a62310f0e46ac9cfee50b7e9eeed93536ed409
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: http://review.coreboot.org/7504
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Tested-by: build bot (Jenkins)