aarch64: testsuite: disable stack protector for tests relying on stack offset

Stack protector needs a guard value on the stack and change the stack
layout.  So we need to disable it for those tests, to avoid test failure
with --enable-default-ssp.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/shrink_wrap_1.c (dg-options): Add
	-fno-stack-protector.
	* gcc.target/aarch64/stack-check-cfa-1.c (dg-options): Add
	-fno-stack-protector.
	* gcc.target/aarch64/stack-check-cfa-2.c (dg-options): Add
	-fno-stack-protector.
	* gcc.target/aarch64/test_frame_17.c (dg-options): Add
	-fno-stack-protector.

gcc/testsuite/gcc.target/aarch64/shrink_wrap_1.c

 /* { dg-do compile { target { aarch64*-*-* } } } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -fno-stack-protector" } */
 /* { dg-final { check-function-bodies "**" "" } } */
 
 /*

gcc/testsuite/gcc.target/aarch64/stack-check-cfa-1.c

 /* { dg-do compile } */
-/* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16 -funwind-tables" } */
+/* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16 -funwind-tables -fno-stack-protector" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
 
 #define SIZE 128*1024

gcc/testsuite/gcc.target/aarch64/stack-check-cfa-2.c

 /* { dg-do compile } */
-/* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16 -funwind-tables" } */
+/* { dg-options "-O2 -fstack-clash-protection --param stack-clash-protection-guard-size=16 -funwind-tables -fno-stack-protector" } */
 /* { dg-require-effective-target supports_stack_clash_protection } */
 
 #define SIZE 1280*1024 + 512

gcc/testsuite/gcc.target/aarch64/test_frame_17.c

 /* { dg-do compile } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -fno-stack-protector" } */
 
 /* Test reuse of stack adjustment temporaries.  */