Fix location list offset address dump under DW_AT_location (dwarf-5)

Fix location list offset address dump under DW_AT_location (dwarf-5)

For clang compiled objects with dwarf-5, location list offset address dump
under DW_AT_location is corrected, where DW_FORM_loclistx is used. While
dumping the location list offset, the address dumped is wrong where it was
refering to .debug_addr instead of .debug_loclists

      * dwarf.c (fetch_indexed_value): Add base_address as parameter and
      use it to access the section offset.
      (read_and_display_attr_value): Handle DW_FORM_loclistx form separately.
      Pass loclists_base to fetch_indexed_value().