S12Z: Set eh_addr_size to 4

* objdump.c (dump_dwarf): Set s12z eh_addr_size to 4.

binutils/ChangeLog

@@ -1,3 +1,7 @@
+2018-10-10  Alan Modra  <amodra@gmail.com>
+
+	* objdump.c (dump_dwarf): Set s12z eh_addr_size to 4.
+
 2018-10-08  Andreas Schwab  <schwab@suse.de>
 
 	* readelf.c (is_32bit_pcrel_reloc): Handle R_RISCV_32_PCREL.

binutils/objdump.c

@@ -2759,6 +2759,12 @@ dump_dwarf (bfd *abfd)
       init_dwarf_regnames_riscv ();
       break;
 
+    case bfd_arch_s12z:
+      /* S12Z has a 24 bit address space.  But the only known
+	 producer of dwarf_info encodes addresses into 32 bits.  */
+      eh_addr_size = 4;
+      break;
+
     default:
       break;
     }