require et feature pie for PIE tests

Both of these tests fail on platforms that reject -fPIC/-fPIE
altogether.

Other tests that perform PIE compilation or linking require the pie
feature, whether for -fpie/-fPIE compilation or for -pie linking.

This patch annotates both tests with the required target feature.


for  gcc/testsuite/ChangeLog

	* gcc.target/i386/pr97313.c: Require effective target feature pie.
	* g++.target/i386/pr94185.C: Likewise.

gcc/testsuite/g++.target/i386/pr94185.C

@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fPIE -fstack-protector-strong" } */
+/* { dg-require-effective-target pie } */
 
 struct a {
   int b;

gcc/testsuite/gcc.target/i386/pr97313.c

@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -fPIE" } */
+/* { dg-require-effective-target pie } */
 
 typedef struct {
   int unspecified : 1;