x86: Include probe_roms.h in probe_roms.c

... to ensure that declarations and definitions are in sync.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/4F5888F902000078000770F1@nat28.tlf.novell.com


Signed-off-by: Ingo Molnar <mingo@elte.hu>