testsuite: xfail gcc.c-torture/compile/pr61159.c on Solaris/x86 with as [PR61159]

gcc.c-torture/compile/pr61159.c currently FAILs on 32 and 64-bit
Solaris/x86 with the native assembler:

FAIL: gcc.c-torture/compile/pr61159.c   -O0  (test for excess errors)
FAIL: gcc.c-torture/compile/pr61159.c   -O1  (test for excess errors)
FAIL: gcc.c-torture/compile/pr61159.c   -O2  (test for excess errors)
FAIL: gcc.c-torture/compile/pr61159.c   -O2 -flto  (test for excess errors)
FAIL: gcc.c-torture/compile/pr61159.c   -O2 -flto -flto-partition=none  (test for excess errors)
FAIL: gcc.c-torture/compile/pr61159.c   -O3 -g  (test for excess errors)
FAIL: gcc.c-torture/compile/pr61159.c   -Os  (test for excess errors)

Excess errors:
Assembler: pr61159.c
        "/var/tmp//ccRtFPva.s", line 5 : Cannot set a weak symbol to a common symbol

This is a bug/limitation in the native assembler.  Given that this
hasn't seen fixes for a long time, this patch xfails the test.

Tested on i386-pc-solaris2.11 (as and gas) and x86_64-pc-linux-gnu.

2024-02-24  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc/testsuite:
	PR ipa/61159
	* gcc.c-torture/compile/pr61159.c: xfail on Solaris/x86 with as.