Re: IBM zSystems: Accept (. - 0x100000000) PCRel32 operands

The new test failed on s390-linux due to bfd_sprintf_vma trimming
output to 32 bits for 32-bit targets.  The test was faulty anyway,
expecting zero as the min end of the range is plainly wrong, but
that's what you get if you cast min to int.

	* config/tc-s390.c (s390_insert_operand): Print range error using
	PRId64.
	* testsuite/gas/s390/zarch-z900-err.l: Correct expected output.