[Bug libgomp/90585] libgomp hsa plugin ftbfs in the x32 multilib variant

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90585

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 46400
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46400&action=edit
gcc10-pr90585.patch

Untested fix.  Note, the rest of libgomp uses PRIu64 only conditionally on
HAVE_INTTYPES_H, so this patch does that too, but as it is in many spots, using
a typedef.