s390: Improve diagnostic for reloc against misaligned sym

Report the BFD in which a misaligned symbol is defined in the error
message.  This complements commit 906f69cf65da ("IBM zSystems: Issue
error for *DBL relocs on misaligned symbols").  While at it reword
the error message.

Old error message text (re-wrapped):
<sec-bfd>(<sec>+<off>): misaligned symbol `<sym>' (<addr>) for
                        relocation <rel>

New error message text (re-wrapped):
<sec-bfd>(<sec>+<off>): relocation <rel> against misaligned symbol
                        `<sym>' (<addr>) in <sym-bfd>

Note that the linker tests do not require to be updated, as they match
against the pattern ".*misaligned symbol.*", which has not changed in
the error message.

bfd/
	PR ld/32969
	* elf64-s390.c (elf_s390_relocate_section): Report BFD
	in which a misaligned symbol is defined in error message.

Bug: https://sourceware.org/PR32969
Suggested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
diff --git a/bfd/elf64-s390.c b/bfd/elf64-s390.c
index 259ad13..7ae11dc 100644
--- a/bfd/elf64-s390.c
+++ b/bfd/elf64-s390.c
@@ -3204,13 +3204,14 @@
 	  _bfd_error_handler
 	    /* xgettext:c-format */
 	    (_("%pB(%pA+%#" PRIx64 "): "
-	       "misaligned symbol `%s' (%#" PRIx64 ") for relocation %s"),
+	       "relocation %s against misaligned symbol `%s' (%#" PRIx64 ") in %pB"),
 	     input_bfd,
 	     input_section,
 	     (uint64_t) rel->r_offset,
+	     howto->name,
 	     h->root.root.string,
 	     (uint64_t)relocation,
-	     howto->name);
+	     sec->owner);
 	  return false;
 	}