[testsuite][arm] Fix asm-flag-[45].c tests

In asm-flag-4.c, we need to use dg-message instead of dg-error because
we have to match "sorry, unimplemented:" rather than "error:".  In
asm-flag-5.c, fix the dg-error syntax.

2019-11-20  Christophe Lyon  <christophe.lyon@linaro.org>

	* gcc.target/arm/asm-flag-4.c: Replace dg-error with dg-message.
	* gcc.target/arm/asm-flag-5.c: Add quotes around dg-error
	messages.

From-SVN: r278487

gcc/testsuite/ChangeLog

+2019-11-20  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* gcc.target/arm/asm-flag-4.c: Replace dg-error with dg-message.
+	* gcc.target/arm/asm-flag-5.c: Add quotes around dg-error
+	messages.
+
 2019-11-20  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/90767

gcc/testsuite/gcc.target/arm/asm-flag-4.c

@@ -9,5 +9,5 @@ void __attribute__((target("arm"))) f(char *out)
 
 void __attribute__((target("thumb"))) g(char *out)
 {
-  asm("" : "=@ccne"(out[0]));  /* { dg-error asm flags not supported } */
+  asm("" : "=@ccne"(out[0]));  /* { dg-message "asm flags not supported" } */
 }

gcc/testsuite/gcc.target/arm/asm-flag-5.c

@@ -13,13 +13,13 @@ void f_ll(void) { long long x; asm("" : "=@cccc"(x)); }
 void f_f(void)
 {
   float x;
-  asm("" : "=@cccc"(x)); /* { dg-error invalid type } */
+  asm("" : "=@cccc"(x)); /* { dg-error "invalid type" } */
 }
 
 void f_d(void)
 {
   double x;
-  asm("" : "=@cccc"(x)); /* { dg-error invalid type } */
+  asm("" : "=@cccc"(x)); /* { dg-error "invalid type" } */
 }
 
 struct S { int x[3]; };
@@ -27,5 +27,5 @@ struct S { int x[3]; };
 void f_S(void)
 {
   struct S x;
-  asm("" : "=@cccc"(x)); /* { dg-error invalid type } */
+  asm("" : "=@cccc"(x)); /* { dg-error "invalid type" } */
 }