Merge tag 'pull-misc-20240730' of https://gitlab.com/rth7680/qemu into staging

util/getauxval: Ensure setting errno if not found
util/getauxval: Use elf_aux_info on OpenBSD
linux-user: open_self_stat: Implement num_threads
target/rx: Use target_ulong for address in LI

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* tag 'pull-misc-20240730' of https://gitlab.com/rth7680/qemu:
  linux-user: open_self_stat: Implement num_threads
  util/cpuinfo: Make use of elf_aux_info(3) on OpenBSD
  linux-user/main: Check errno when getting AT_EXECFD
  util/getauxval: Ensure setting errno if not found
  target/rx: Use target_ulong for address in LI

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>