program loading: provide one cache maintenance callback

Instead of having 2 different functions to call when a program
is loaded provide a single callback with flags parameter. The
previous callbacks for cache management routines did this:

for_each_program_segment:
	arch_program_segment_loaded(start, size);
arch_program_loaded();

Now, use one callback instead:
for_each_program_segment:
	arch_segment_loaded(start, size, SEG_FINAL?);

Change-Id: I3811cba92e3355d172f605e4444f053321b07a2a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8838
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/lib/cbfs.c

@@ -112,8 +112,7 @@ void *cbfs_load_stage_by_offset(struct cbfs_media *media, ssize_t offset)
 		media->unmap(media, data);
 	}
 
-	arch_program_segment_loaded(stage.load, stage.memlen);
-	arch_program_loaded();
+	arch_segment_loaded(stage.load, stage.memlen, SEG_FINAL);
 	DEBUG("stage loaded\n");
 
 	return (void *)(uintptr_t)stage.entry;