testsuite: i386: Fix gcc.target/i386/pr80833-1.c on 32-bit Solaris/x86

gcc.target/i386/pr80833-1.c FAILs on 32-bit Solaris/x86 since 20220609:

FAIL: gcc.target/i386/pr80833-1.c scan-assembler pextrd

Unlike e.g. Linux/i686, 32-bit Solaris/x86 defaults to -mstackrealign,
so this patch overrides that to match.

Tested on i386-pc-solaris2.11 and i686-pc-linux-gnu.

2024-01-23  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc/testsuite:
	* gcc.target/i386/pr80833-1.c: Add -mno-stackrealign to dg-options.

gcc/testsuite/gcc.target/i386/pr80833-1.c

 /* { dg-do compile } */
-/* { dg-options "-O2 -msse4.1 -mtune=intel -mregparm=2" } */
+/* { dg-options "-O2 -msse4.1 -mtune=intel -mregparm=2 -mno-stackrealign" } */
 /* { dg-require-effective-target ia32 } */
 
 long long test (long long a)