rs6000: Use "dg-warning ... 0" in a few places

GCC used to give warnings for line # 1 for these, but it prints no
line number anymore.  Adjust.


gcc/testsuite/
	* gcc.target/powerpc/warn-1.c: Change line number in dg-warning.
	* gcc.target/powerpc/warn-2.c: Ditto.

From-SVN: r241056

gcc/testsuite/ChangeLog

+2016-10-12  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* gcc.target/powerpc/warn-1.c: Change line number in dg-warning.
+	* gcc.target/powerpc/warn-2.c: Ditto.
+
 2016-10-12  Robert Suchanek  <robert.suchanek@imgtec.com>
 
 	* gcc.dg/vect/slp-26.c: Check if vectorized for MIPS MSA.

gcc/testsuite/gcc.target/powerpc/warn-1.c

@@ -3,7 +3,7 @@
 /* { dg-require-effective-target powerpc_vsx_ok } */
 /* { dg-options "-O -mvsx -mno-altivec" } */
 
-/* { dg-warning "-mvsx and -mno-altivec are incompatible" "" { target *-*-* } 1 } */
+/* { dg-warning "-mvsx and -mno-altivec are incompatible" "" { target *-*-* } 0 } */
 
 double
 foo (double *x, double *y)

gcc/testsuite/gcc.target/powerpc/warn-2.c

@@ -4,7 +4,7 @@
 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power7" } } */
 /* { dg-options "-O -mcpu=power7 -mno-altivec" } */
 
-/* { dg-warning "-mno-altivec disables vsx" "" { target *-*-* } 1 } */
+/* { dg-warning "-mno-altivec disables vsx" "" { target *-*-* } 0 } */
 
 double
 foo (double *x, double *y)