Change references to flashrom-stable

Adapt all mentions of the mailing list and also the version print.

Change-Id: Ib4a3271422ee6cf4d0efb8c3fa858b66a22c0a33
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/70922
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/opaque.c b/opaque.c
index 276934f..ab39100 100644
--- a/opaque.c
+++ b/opaque.c
@@ -51,8 +51,8 @@
 	struct registered_master rmst;
 
 	if (!mst->probe || !mst->read || !mst->write || !mst->erase) {
-		msg_perr("%s called with incomplete master definition. "
-			 "Please report a bug at flashrom@flashrom.org\n",
+		msg_perr("%s called with incomplete master definition.\n"
+			 "Please report a bug at flashrom-stable@flashrom.org\n",
 			 __func__);
 		return ERROR_FLASHROM_BUG;
 	}