EDAC: Fix MC scrub mode comparsion bug for correctable errors

The MC structure field scrub_mode is of integer type - not bit field.
Use it accordingly.

Signed-off-by: Loc Ho <lho@apm.com>
Link: http://lkml.kernel.org/r/1399590199-12256-2-git-send-email-lho@apm.com


Signed-off-by: Borislav Petkov <bp@suse.de>