testsuite: arg-pushing reqs -mno-accumulate-outgoing-args

gcc.target/i386/pr95126-m32-[34].c expect push instructions that are
only present with -mno-accumulate-outgoing-args, so make that option
explicit rather than dependent on tuning.


for  gcc/testsuite/ChangeLog

	* gcc.target/i386/pr95126-m32-3.c: Add
	-mno-accumulate-outgoing-args.
	* gcc.target/i386/pr95126-m32-4.c: Likewise.

gcc/testsuite/gcc.target/i386/pr95126-m32-3.c

 /* { dg-do compile { target { ia32 } } } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -mno-accumulate-outgoing-args" } */
 
 struct small{ short a; };
 

gcc/testsuite/gcc.target/i386/pr95126-m32-4.c

 /* { dg-do compile { target { ia32 } } } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -mno-accumulate-outgoing-args" } */
 
 struct small{ short a,b; };