testsuite: Fix misquoted string in bfcvt-nosimd.c

2020-03-13  Vasee Vinayagamoorthy  <vaseeharan.vinayagamoorthy@arm.com>

gcc/testsuite/
	* gcc.target/aarch64/advsimd-intrinsics/bfcvt-nosimd.c: Fix DejaGnu
	typo.

gcc/testsuite/ChangeLog

+2020-03-13  Vasee Vinayagamoorthy  <vaseeharan.vinayagamoorthy@arm.com>
+
+	* gcc.target/aarch64/advsimd-intrinsics/bfcvt-nosimd.c: Fix DejaGnu
+	typo.
+
 2020-03-13  Martin Sebor  <msebor@redhat.com>
 
 	PR c/94040

gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/bfcvt-nosimd.c

 /* { dg-do assemble { target { aarch64*-*-* } } } */
 /* { dg-require-effective-target aarch64_asm_bf16_ok } */
 /* { dg-additional-options "-save-temps -march=armv8.2-a+bf16+nosimd" } */
-/* { dg-final { check-function-bodies "**" "" "-O[^0]" } } */
+/* { dg-final { check-function-bodies "**" "" {-O[^0]} } } */
 
 #include <arm_neon.h>