Since address 0x800000 overlaps with .heap section on tic6x-*-elf, skip pr11304.d on tic6x-*-elf. * testsuite/ld-elf/pr11304.d: Skip tic6x-*-elf.
* ld-elf/pr11304.d: New test. * ld-elf/pr11304a.s: New test. * ld-elf/pr11304b.s: New test. * lib/ld-lib.exp (regexp_diff): Add support for #failif.