Implement a check that redirects mock io functions to the real
implementations. Real I/O functions are needed for the coverage tool to
be able to create and write files.
BUG=None
BRANCH=None
TEST=None
Change-Id: I0817fce6ea0f53a4c127794a0d8246504675f805
Signed-off-by: Evan Benn <evanbenn@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/69539
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
