* config/xtensa-istack.h (TInsn): Replace dwarf2_line_info with an
unsigned line number. Do not include "dwarf2dbg.h".
* config/tc-xtensa.c (md_pseudo_table): Remove entry for "loc".
(xtensa_dwarf2_directive_loc, xtensa_dwarf2_emit_insn): Delete.
(xg_build_to_insn, xg_build_token_insn): Update TInsn uses.
(md_assemble): Use as_where instead of dwarf2_where.
(xg_assemble_vliw_tokens): Use unsigned line numbers instead of
dwarf2_line_infos. Change to call new_logical_line followed by
dwarf2_emit_insn.