vdso: handle s390x correctly

On s390x there is currently a build failure:

criu/pie/util-vdso.c: In function ‘elf_symbol_lookup’:
criu/pie/util-vdso.c:313:31: error: initialization of ‘uint32_t *’ {aka ‘unsigned int *’} from incompatible pointer type ‘Hash_t *’ {aka ‘long unsigned int *’} [-Wincompatible-pointer-types]
  313 |                 uint32_t *h = bucket + nbucket + (j - sym_off);
      |                               ^~~~~~

Replacing uint32_t with Hash_t which is defined behind a architecture
specific ifdef solves this error.

Signed-off-by: Adrian Reber <areber@redhat.com>

Author: adrianreber

criu/pie/util-vdso.c

@@ -310,8 +310,8 @@ static unsigned long elf_symbol_lookup(uintptr_t mem, size_t size,
 	addr = mem + dyn_symtab->d_un.d_ptr - load->p_vaddr;
 
 	if (use_gnu_hash) {
-		uint32_t *h = bucket + nbucket + (j - sym_off);
-		uint32_t hash_val;
+		Hash_t *h = bucket + nbucket + (j - sym_off);
+		Hash_t hash_val;
 
 		symbol_hash |= 1;
 		do {