installboot: sparc64: log copy of /ofwboot

[Klemens Nanni]

Another step towards more consistent behaviour across platforms.

This leaves only hppa and landisk **not** logging such copies,
but I can't test on those.

OK?

Index: sparc64_installboot.c
===================================================================
RCS file: /cvs/src/usr.sbin/installboot/sparc64_installboot.c,v
retrieving revision 1.9
diff -u -p -r1.9 sparc64_installboot.c
--- sparc64_installboot.c       20 Jul 2021 14:51:56 -0000      1.9
+++ sparc64_installboot.c       31 Aug 2022 19:16:33 -0000
@@ -103,6 +103,9 @@ md_installboot(int devfd, char *dev)
        bootldr = fileprefix(root, bootldr);
        if (bootldr == NULL)
                exit(1);
+       if (verbose)
+               fprintf(stderr, "%s %s to %s\n",
+                   (nowrite ? "would copy" : "copying"), stage2, bootldr);
        if (!nowrite)
                if (filecopy(stage2, bootldr) == -1)
                        exit(1);