Explain better what checks are disabled in case we detect a legacy BIOS

Corresponding to flashrom svn r1310.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Peter Stuge <peter@stuge.se>
diff --git a/layout.c b/layout.c
index 92fe852..d719a05 100644
--- a/layout.c
+++ b/layout.c
@@ -76,7 +76,8 @@
 	mb_vendor_offset = *(walk - 2);
 	if ((*walk) == 0 || ((*walk) & 0x3ff) != 0 || (*walk) > size ||
 	    mb_part_offset > size || mb_vendor_offset > size) {
-		msg_pinfo("Flash image seems to be a legacy BIOS. Disabling checks.\n");
+		msg_pinfo("Flash image seems to be a legacy BIOS. "
+		          "Disabling coreboot-related checks.\n");
 		return 0;
 	}