hppa64: Fix some issues handling dynamic relocaltions

hppa64: Fix some issues handling dynamic relocaltions

This change fixes the allocation logic in allocate_dynrel_entries and
elf64_hppa_finalize_dynreloc.  It also fixes addend calculation for
segment based relocations.

Some applications now link successfully on HP-UX but there are still
issues with external weak symbols.  This breaks linking with libgcc.
It looks like we need support for .rela.data.rel.ro, ...

2025-11-04  John David Anglin  <danglin@gcc.gnu.org>

bfd/ChangeLog:

	* elf64-hppa.c (allocate_dynrel_entries): Correct hh->want_opd
	if condition.
	(elf64_hppa_finalize_dynreloc): Likewise.  Use symbol address
	instead of OPD address.  Include sec->output_offset in value2
	calculation.
	(elf64_hppa_finalize_opd): Likewise.
	(elf64_hppa_finalize_dlt): Likewise.
	(elf_hppa_final_link_relocate): Fix symbol address calculation.